A pediatrician randomly selected 50 six-month-old boys from her practice's database and recorded an average weight of 15.7 pounds with a standard deviation of 0.42 pounds. She also recorded an average length of 27.6 inches with a standard deviation of 0.28 inches. Find a 99% confidence interval for the average length (in inches) of all six-month-old boys.
27.25 in. to 27.95 in.
27.32 in. to 27.98 in.
27.50 in. to 27.70 in.
27.74 in. to 27.98 in.

Answers

Answer 1

The 99% confidence interval for the average length (in inches) of all six-month-old boys is 27.74 in. to 27.98 in. The correct answer is E


This is calculated using the average length (27.6 in.) and standard deviation (0.28 in.) recorded by the pediatrician. To calculate the confidence interval, you need to calculate the margin of error. The margin of error is found using the following formula:

ME = (Critical Value) x (Standard Deviation/√Sample Size)

For a 99% confidence interval, the critical value is 2.58. Therefore, the margin of error for this sample is (2.58) x (0.28/√50) = 0.24 in. This means that the 99% confidence interval for the average length of all six-month-old boys is 27.6 in. ± 0.24 in., or 27.74 in. to 27.98 in. The correct answer is E

Learn more about confidence interval at https://brainly.com/question/13768251

#SPJ11


Related Questions

Alisa is choosing new tile for the floor in her dining room which is in the shape of a square with side lengths x feet. The tile costs ​$3. 39 per square foot

Answers

Th function is f(x) = 3.39x²

The cost of the flooring for a dining room is $410.19.

The cost of the flooring for a dining room is $6,072.31.

What is a function?

A function has an input and an output.

A function can be one-to-one or onto one.

It simply indicated the relationships between the input and the output.

Example:

f(x) = 2x + 1

f(1) = 2 + 1 = 3

f(2) = 2 x 2 + 1 = 4 + 1 = 5

The outputs of the functions are 3 and 5

The inputs of the function are 1 and 2.

We have,

Area of a square = side²

Square with side lengths = x feet.

The tile costs ​= $3.39 per square foot.

a.

The function f for the cost of the flooring.

f(x) = 3.39x²

b.

x =  11 feet

f(11) = 3.39 x 11²

f(11) = 3.39 x 121

f(11) = $410.19

c.

x = 23 feet

f(23) = 3.39 x 23²

f(23) = 3.39 x 529

f(23) = $6,072.31

Therefore,

f(x) = 3.39x²

The cost of the flooring for a dining room is $410.19.

The cost of the flooring for a dining room is $6,072.31.

Learn more about Function here:

brainly.com/question/28533782

#SPJ4

Complete Question

Alisa is choosing new tile for the floor in her dining room which is in the shape of a square with side lengths x feet. The tile costs ​$3.39 per square foot.

a. Write the function f for the cost of the flooring.

b. Determine the cost of the flooring if she decides on a dining room with side lengths of 11 ft.

c. Determine the cost of the flooring if she decides on a dining room with side lengths of 23 ft


L: 40 in
The figure will be dilated by a D
scale factor of 3.5. Find the
new measure of the base.
9 in
10 in
9 in

Answers

The new measure of the base is 35 inches

How to determine the new measure of the base

From the question, we have the following parameters that can be used in our computation:

Base = 10 inches

Scale factor of dilation = 3.5

Using the above as a guide, we have the following:

Image of the point = Scale factor of dilation * Base

Substitute the known values in the above equation, so, we have the following representation

New measure of base = 3.5 * 10

Evaluate

New measure of base = 35

Hence, the new base is 35 inches

Read more about dilation at

https://brainly.com/question/3457976

#SPJ1

26. Complete the following proof. Given: \( \angle Q P S \cong \angle T P R \) Prove: \( \angle Q P R \cong \angle T P S \)

Answers

The proof of the congruence of the angles ∠QPS and ∠TPR is shown below

Completing the proofs of the angles

Given that

∠QPS ≅ ∠TPR

We have the proof of the congruence of the angles ∠TPS and ∠QPR using the following two column style of proofs

         Statements                                     Reasons

a        ∠QPS ≅ ∠TPR                                Given

b        ∠QPS ≅ ∠TPR                                Given

c        ∠QPS ≅ ∠QPR + ∠RPS                   Addition property

         ∠TPR ≅ ∠TPS + ∠RPS                          

d        ∠TPR ≅ ∠QPR + ∠RPS                    Substitution

e        ∠QPR + ∠RPS ≅ ∠TPS + ∠RPS       Substitution

f         ∠QPS  ≅ ∠TPS                                  Subtract property

Read more about proof at

https://brainly.com/question/18286984

#SPJ1

Complete question

Complete the following proof. Given: ∠QPS ≅ ∠TPR

Prove: ∠QPS  ≅ ∠TPS

         Statements                                     Reasons

a        ______________                          ______________

b        ∠QPS ≅ ∠TPR                                ______________

c        ∠QPS ≅ ∠QPR + ∠RPS                   ______________

         ∠TPR ≅ ∠TPS + ∠RPS                          

d        ______________                           Substitution

e        ______________                          ______________

f        ______________                          ______________


Fill in the blank question.
The table shows the distance a runner has traveled y, in miles, x minutes after the start of a race. What is the runner's average rate of change, in miles per minute, from 60 to 120 minutes?

Time (min) Distance (miles)
0 0
30 3.48
60 6.42
90 9.18
120 12.0

Answers

According to the speed formula, the runner's average rate of change from 60 to 120 minutes is approximately: 5.58 / 60 = 0.093 miles per minute

What is speed?

Speed is defined as the distance travelled by an object in a given amount of time. Speed is a scalar quantity, meaning that it has magnitude but no direction.

Mathematically, speed is calculated as follows:

speed = distance / time

where "distance" is the distance travelled by the object, and "time" is the time it takes for the object to travel that distance.

The average rate of change of a function over an interval is the slope of the secant line between the endpoints of the interval.

In this case, we want to find the average rate of change of the distance function from 60 to 120 minutes. The distance function is given by the table as:

Time (min) Distance (miles)

0       0

30     3.48

60     6.42

90     9.18

120   12.0

To find the average rate of change from 60 to 120 minutes, we need to calculate the slope of the secant line passing through the points (60, 6.42) and (120, 12.0).

The slope of the secant line is given by:

slope = (change in y) / (change in x) = (12.0 - 6.42) / (120 - 60) = 5.58 / 60

Therefore, the runner's average rate of change from 60 to 120 minutes is approximately: 5.58 / 60 = 0.093 miles per minute

To know more about speed visit:

brainly.com/question/13263542

#SPJ1

for a normal distribution with mean 50 and standard deviation 15
find the Q1 and Q3

Answers

Q1 = 7.75th item

Q3 = 23.25th item

Given,For a normal distribution with mean 50 and standard deviation 15,To find Q1 and Q3Formula for Q1 and Q3:Q1 = (n + 1)/4Q3 = 3(n + 1)/4Here, n = total number of observationsn = 2 × 15 = 30Thus, n + 1 = 31We know that for a normal distribution the Z values for Q1 and Q3 are -0.67 and 0.67 respectively.Normal distribution is a statistical model that describes the randomness of a variable in a population. It is symmetric around the mean. The mean is an essential property of a normal distribution. The standard deviation is the amount of variability among the observations that a distribution has.Mean = 50Standard deviation = 15Q1 = (n + 1)/4 = (30 + 1)/4 = 7.75th itemQ3 = 3(n + 1)/4 = 3 × (30 + 1)/4 = 23.25th itemThe 7.75th item and 23.25th item are calculated with the help of the formula.

Learn more about standard deviation

brainly.com/question/16555520

#SPJ4

PLEASE HELP!!
Write an inequality for the following problem. Use W for your variable.
2 times a number increased by 23 is at most 70.

Answers

Answer:

Step-by-step explanation:

2W+23 is at most 70. So, 2W+23 must be less than or equal to 70.

2W+23≤70

Solve

2W≤47

W≤47/2 or W≤23.5

The answer will be 186

15 POINTS. How to do this one please teach by step by step​

Answers

Given the ASA postulate, it is seen that ABC and DEF are congruent


What is the ASA congruence theorem?

The ASA congruence theorem is a postulate in Euclidean geometry that states that if two angles and the side between them in one triangle are congruent to the corresponding angles and sides in another triangle, then the two triangles are congruent.

More formally, the statement of the ASA congruence theorem can be summarized as follows:

If in two triangles, two pairs of corresponding angles are congruent, and the included sides are also congruent, then the triangles are congruent.

angles ABC and DEF are congruent because they have the same size and shape.


Read more about the ASA congruence theorem here:

https://brainly.com/question/3168048

#SPJ1

III. Three fair tetrahedra (same as the one in part II except (magenta; green; red)) are tossed. Find the prob's of: a. All the same Greek letter. b. No γ 's nor δ 's. c. Exactly two β 's. d. All different Greek letters.

Answers

Answer:

d all differet grreek letters

A student writes down the following piece of work which contains an error in their reasoning. The equation is: y 2
−23y=0 Add 23y to each side: y 2=23y Divide each side By y : y=23 (i) Substitute y=23 into the left-hand side of the equation y 2−23y=0, and explain why this shows that y=23 is indeed a solution of the equation. (ii) Write out a complete solution of the equationy 2−23y=0. (iii) Explain, as if directly to the student, why their solution is inadequate. Solve the following equation, checking that your solution is correct: 6−x16 = x+356

Answers

The following are the answers:

(e) All the parts are discussed in step 2.

(f) The solution is x= 4 and the verification is shown below

How to solve

Given the equation y^2  - 23y = 0

We would follow the steps

Given the equation [tex]\frac{16}{6-x} = \frac{56}{x + y}[/tex]

We need to solve this and verify the solution

(e) (i) Substitute y = 23 on the left-hand side of the given equation.

23^2 -23(23)  = 0

0 = 0

Since the left-hand side is equal to the right-hand side, hence y= 23 is the solution of the given equation, but it is not the only solution.

(ii) Complete solution of the given equation:

y^2 -23y = 0

y(y-23) =0

y= 0

and y -23 = 0

y = 0, 23

Hence the complete solution of the given equation is y= 0, 23

EXPLANATION

If a.b = 0, then a= 0, b=0

.

(iii) The solution is inadequate because we can cancel the term only if it non zero.

Also, the given equation has power 2, but the student is getting only a single value, which is incorrect.

Solve the given equation as follows:

[tex]\frac{16}{6-x} = \frac{56}{x + 3}[/tex]

16 (x +3)= 56(6-x)

= 2x + 6= 42- 7x

9x = 36

x= 4

Hence the required solution is x= 4

Read more about math equations here:

https://brainly.com/question/22688504

#SPJ1

a. Is this tunction increasing of decreasing for the yearn2000−2015? A) Incroasing B) Decreasing

Answers

The correct answer is option A) Increasing.

The given question is regarding the function and its behavior. To determine whether a given function is increasing or decreasing, we should first find its derivative. Then, if the derivative is positive, the function is increasing, and if the derivative is negative, the function is decreasing.A function is given as: yearn = f (2000, 2015)Here, the independent variable is "year," and the dependent variable is "n." Thus, to find out whether this function is increasing or decreasing, we need to find the derivative of this function:$$\frac{dy}{dx}=\frac{dy}{dn}*\frac{dn}{dx}$$$$\frac{dy}{dx}=0.028$$Since the derivative is positive, it means the function is increasing. Therefore, the correct answer is option A) Increasing.

Learn more about Function

brainly.com/question/30721594

#SPJ4

Raju & akash is given to solve a mathematical problem. The probabitlity that they will solve this problem is 1/3 & 3/4 respectively. Then, find the probability that both Raju & AKAsh will solve any random problem given to them after sufficient time

Answers

The probability that both Raju and Akash will solve any random problem given to them after sufficient time is 1/4.

The probability that Raju will solve a random problem given to him is 1/3 and the probability that Akash will solve the same problem is 3/4. We can use the multiplication rule of probability to find the probability that both of them will solve any random problem given to them after sufficient time.

According to the multiplication rule of probability, the probability of two independent events A and B occurring together is the product of their individual probabilities:

P(A and B) = P(A) × P(B)

In this case, the event "Raju solves a problem" is independent of the event "Akash solves a problem". Therefore, the probability that both Raju and Akash will solve a random problem given to them after sufficient time is:

P(Raju and Akash) = P(Raju) × P(Akash)

= 1/3 × 3/4

= 1/4

To learn more about probability

https://brainly.com/question/30034780

#SPJ4

Every morning, Matthew ills his dog’s water dish with 16 oz of water. If his dog finishes his water every day, how many ounces will his dog drink in a week?

How many cups is this?
How many pints is this?
How many quarts is this equal to?
How many quarts is this?

Answers

The dog drinks 112 ounces, or 14 cups, or 7 pints, or 3.5 quarts of water per week.

How to find intake of the dog?

The dog drinks 16 oz of water every day, so in a week (7 days), the dog will drink:

16 oz/day × 7 days/week = 112 oz/week

To convert ounces to cups, we divide by 8 (since there are 8 fluid ounces in a cup):

112 oz/week ÷ 8 oz/cup = 14 cups/week

To convert ounces to pints, we divide by 16 (since there are 16 fluid ounces in a pint):

112 oz/week ÷ 16 oz/pint = 7 pints/week

To convert ounces to quarts, we divide by 32 (since there are 32 fluid ounces in a quart):

112 oz/week ÷ 32 oz/quart = 3.5 quarts/week

Therefore, the dog drinks 112 ounces, or 14 cups, or 7 pints, or 3.5 quarts of water per week.

Learn more about ounces

https://brainly.com/question/29374025

#SPJ1

100 points please help!!

Answers

your answer should be (5x-1)(x+4)

Answer: (5x-1)(x+4)

Step-by-step explanation:what she said

Can you solve for the other x please

Answers

The solution to the inequality is: x >= 55 or x <= -32.

what is inequality?

An inequality is a mathematical statement that compares two values or expressions and indicates that they are not equal. In other words, an inequality shows the relationship between two values or expressions that are not the same.

To solve the inequality, we need to isolate x on one side of the inequality symbol in each of the two inequalities.

For the first inequality:

3 - 2/5 * x <= -19

Subtracting 3 from both sides, we get:

-2/5 * x <= -22

Dividing both sides by -2/5 (which is the same as multiplying both sides by -5/2), we get:

x >= 55

For the second inequality:

-3/4 * x >= 24

Dividing both sides by -3/4 (which is the same as multiplying both sides by -4/3), we get:

x <= -32

Therefore, the solution to the inequality is:

x >= 55 or x <= -32.

To learn more about inequality from given link:

https://brainly.com/question/30228778

#SPJ1

(1 point) Assume that the monthly wondwide average number of airplaine crashes of commercial ailines is \( 2.2 \). What is the probability that there wili be (a) at most 3 such accidents in the next m

Answers

Answer: 2.2

Step-by-step explanation:

A softball coach has ordered softballs for two different leagues. The Junior League uses an 11-inch softball priced at $2.50 each. The Senior League uses a 12-inch softball priced at $3.50 each. The softball coach ordered a total of 120 softballs for $350.

If j is the number of softballs ordered for the Junior League and s is the number of softballs ordered for the Senior League, select the system of linear equations that represents the situation.

1. j + s = 350
2.5j + 3.5s = 120

2. j + s = 120
3.5j + 2.5s =350

3. j + s = 350
3.5j + 2.5s = 120

4. j + s = 120
2.5j + 3.5s = 350

Answers

The system of linear equations that represents the situation is:

(option 4)  j + s = 120

                 2.5j + 3.5s = 350

How to know the system of linear equations that represents the situation?

Let j be the number of 11-inch softballs ordered for the Junior League, and s be the number of 12-inch softballs ordered for the Senior League.

The total number of softballs ordered is 120, so we have:

j + s = 120

The cost of each 11-inch softball is $2.50, and the cost of each 12-inch softball is $3.50. The total cost of the order is $350, so we have:

2.5j + 3.5s = 350

Therefore, the system of linear equations that represents the situation is:

j + s = 120

2.5j + 3.5s = 350

Learn about System of linear equations here https://brainly.com/question/25858757

#SPJ1

Find the indicated real nth roots of a n=3, a=-125

Answers

The cube root of -1 is -1, and the cube root ∛(-125) is -5.

To find the real nth roots of a number a, we can use the formula:

[tex]√(a) = a^(1/n)[/tex]

For the case where n=3 and a=-125, we have:

[tex]√(-125) = (-125)^(1/3)[/tex]

We can simplify this using the fact that

[tex](-a)^(1/n) = -(a^(1/n)):[/tex]

√(-125) = - (√125)

Now we need to find the cube root of 125. We can factor 125 as 555, so:

√(-125) = - (√125) = - (√(555)) = - (5√5)

Therefore, the real cube root of -125 is -5√5.

The cube root of -125 is the real number x that satisfies the equation

[tex] {x}^{3} [/tex]

= -125.

We can rewrite -125 as -1*5^3, which means we can write the cube root of -125 as ∛(-1)*∛(5^3).

The cube root of -1 is -1, and the cube root of 5^3 is 5, so ∛(-125) = -1*5 = -5.

learn more about cube root here:

https://brainly.com/question/30038389

#SPJ4

Nine less than four times a number equals fithteen

Answers

Answer:6

Step-by-step explanation:

let's write this as equation,

4x-9=15

4x=15+9=24

x=24/4=6

PLEASE SHOW WORK!!!!!!!!!

Answers

Answer:

The answer is D

Which equation represents this transformation?

Answers

The answer is D.

This is because the unit is going 3 units right on the x-axis making it a positive (+3) and then subtracting 1 from the y-axis

When two dice are​ rolled, the total is between 2 and 12 inclusive. A student simulates the rolling of two dice by randomly generating numbers between 2 and 12. Does this simulation behave in a way that is similar to actual​ dice? Why or why​ not?

Answers

The simulatiοn dοes't behave in way that is similar tο actual dice because οf variatiοn οf prοbability.

What is prοbability?

Prοbability is a way οf calculating hοw likely sοmething is tο happen. It is difficult tο prοvide a cοmplete predictiοn fοr many events. Using it, we can οnly fοrecast the prοbability, οr likelihοοd, οf an event οccurring. The prοbability might be between 0 and 1, where 0 denοtes an impοssibility and 1 denοtes a certainty.

a)The pοssible cοmbinatiοns frοm the twο dices tο get a tοtal οf seven are

=> (1,6) (2,5) (3,4) (4,3) (5,2) (6,1)

i.e. 6 cases and the tοtal nο. οf cοmbinatiοns

=>6 * 6 = 36.

Hence the nο. οf cases favοurable fοr us οut οf all the cοmbinatiοns is  6.

Hence the prοbability is  6/36 = 1/6.

b)To get a 7 out from a set of 2,12 inclusive is 1/11.

Because it is a choice of 1 no. from the 11 numbers available.

c). NO.

This simulatiοn dοesn't behave like the actual dice because in the secοnd case we are chοοsing οne number frοm the 11 available οptiοns whereas in the first case it is the prοbability οf chοοsing the 6 right cοmbinatiοns frοm the 36 cοmbinatiοns available.

i.e . Chοοsing 6 frοm 36 . hence the prοbability is 1/6.

whereas the chοice οf 1 frοm 11 . i.e prοbability is 1/11.

Tο learn more about probability refer the below link

https://brainly.com/question/13604758

#SPJ1

When the outlier(s) are removed, how does the mean change?

A) The mean decreases by 1.9.

B) The mean increases by 2.4.

C) The mean increases by 1.9.

D) There are no outliers.

Answers

Answer:

B) The mean increases by 2.4 because the mean is 1149 and there 6 outliers.

Find the Z-scores for which 50% of the distribution's area lies between -z and z.


Click to view page 1 of the table Click to view page 2 of the table.


The z-scores are


(Use a comma to separate answers as needed Round to two decimal places as needed. )

Answers

The z-scores for which 50% of the distribution's area lies between -z and z are: z = -0.675 and z = 0.675.

How to obtain probabilities using the normal distribution?

The z-score of a measure X of a variable that has mean symbolized by [tex]\mu[/tex] and standard deviation symbolized by [tex]\sigma[/tex] is obtained by the rule presented as follows:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The z-score represents how many standard deviations the measure X is above or below the mean of the distribution, depending if the obtained z-score is positive or negative.Using the z-score table, the p-value associated with the calculated z-score is found, and it represents the percentile of the measure X in the distribution.

The normal distribution is symmetric, meaning that the middle 50% of the scores is given between these following percentiles:

25th percentile -> z = -0.675.75th percentile -> z = 0.675.

More can be learned about the normal distribution at https://brainly.com/question/25800303

#SPJ1

Which deal is better. 500ml of lemonade for 94p or 750ml of lemonade for £1.44

Answers

Answer:

To compare the deals, we need to find the price per milliliter of lemonade for each deal.

For the first deal, the price per milliliter is:

94p / 500ml = 0.188p/ml

For the second deal, the price per milliliter is:

£1.44 / 750ml = 0.192p/ml

Therefore, the first deal is better as it has a lower price per milliliter of lemonade.

1. There are three buses A, B and C. the total
number of seats in the three buses is 250. 28% of
the 250 seat are in bus A.
number of seats in bus B:number of seats in bus
C = 3:2
38 of the seats in bus B are empty. 26 in bus C
are empty.
Jamie says the percentage of the seats in bus B
that are empty is greater than the percentage of
the seats in bus C that are empty. Is Jamie
correct.

Answers

Thus, Jamie is wrong. In contrast to Bus C, Bus B has less unoccupied seats as a percentage of total seats.

How do the percentages translate?

% is a relative number that is used to represent hundredths of the any quantity. Since one percent (symbolized as 1%) is equal to one hundredth of something, 100 percent stands for everything, and 200 percent refers to twice the amount specified. percentage.

Find the complete seating capacity in Bus A first:

Bus A has 28% of the available seats, making its seat count 0.28 x 250 = 70.

Secondly, we can construct an equation system using the number of seats in Bus B compared to Bus C:

The number of seats aboard Bus B will be x.

In that case, Bus C's seating capacity is (2/3)x.

Using the information that there are 250 seats overall, we can find x:

70 (from Bus A) + x (from Bus B) + (2/3)x (from Bus C) = 250

When we simplify this equation, we obtain: (5/3)x = 180

When we solve for x, we get x = 108.

Bus C has (2/3)x = 72 seats, but Bus B has 108 seats.

We can now determine the proportion of vacant seats for each bus:

Out of a total of 108 seats, 38 seats on Bus B are vacant, making the percentage of vacant seats in Bus B (38/108) x 100% = 35.19%.

Out of a total of 72 seats, there are 26 empty seats on Bus C, making the percentage for empty seats there (26/72) x 100% = 36.11%.

To know more about Percentage visit:

https://brainly.com/question/843074

#SPJ1

Answer:

what paper is this for this question

A quadrilateral has two angles that measure 216° and 102°. The other two angles are in a ratio of 10:11. What are the measures of those two angles?

Answers

The measures of the missing angles are 20° and 22°.

The sum of the angles of a quadrilateral is 360 degrees. We can use this fact to find the measure of the missing angles.

Let x and y be the measures of the missing angles, such that x:y = 10:11. Then we have:

216° + 102° + x + y = 360°

Simplifying this equation, we get:

x + y = 42°

We also know that x:y = 10:11, so we can write:

x = 10k

y = 11k

where k is a constant. Substituting these expressions into the equation x + y = 42°, we get:

10k + 11k = 42

21k = 42

k = 2

Therefore, x = 10k = 20° and y = 11k = 22°.

So, the measures of the missing angles are 20° and 22°.

For more such questions on Angles: brainly.com/question/23755544

#SPJ4

can someone explain how to solve this question with steps​

Answers

First we need to find the inverse function.  To do this, I'd put f(x) into vertex form:

    [tex]\begin{aligned}f(x) &= (x^2-4x)-6\\[0.5em] &= (x^2-4x+4)-6-4\\[0.5em] &= (x-2)^2-10\\[0.5em]\end{aligned}[/tex]

Now, we can try to invert the function, keeping in mind this is only used when x≥2.

     [tex]\begin{aligned}y&= (x-2)^2-10\\[0.5em]y+10&= (x-2)^2\\[0.5em]\sqrt{y+10}&= x-2\\[0.5em]\sqrt{y+10}+2&= x\\[0.5em]\end{aligned}[/tex]

(The fact that x ≥ 2 allowed us only keep the positive square root on the third line.)

So our inverse function is [tex]f^{-1}(y)=\sqrt{y+10}+2[/tex].

Now, let's find the derivative of this function:

    [tex]\begin{aligned}\dfrac{df^{-1}}{dy}&= \dfrac{1}{2\sqrt{y+10}}\cdot\dfrac{d}{dy}[y+10]\\[0.5em] &= \dfrac{1}{2\sqrt{y+10}}\end{aligned}\\[/tex]

(The chain rule was used, but the derivative of the inside function equals 1.)

So [tex](f^{-1})'(-6) = \dfrac{1}{2\sqrt{-6+10}} = \dfrac{1}{4}[/tex]

Now having done all of that, it did cross my mind that since [tex]f[/tex] and [tex]f^{-1}[/tex] are simply reflections over the line y=x, if we had actually just found f'(4) and then used the reciprocal slope, we'd also get the same answer more quickly.

f'(x) = 2x - 4

when y = -6, then x = 4 (by solving f(x) = -6).

f'(4) = 4, so reflecting that slope of 4/1 over the line y=x, we'd get a slope of 1/4.

Lily is practicing multiplying complex numbers using the complex number (2+i).
To determine the value of (2+i)²,Lily performs the following operations:
Step 1: (2+i)²= 4+i²
Step 2: 4+i² = 4+ (−1)
Step 3: 4+(-1)=3
Lily made an error.
Explain Lily's error and correct the step which contains the error.
Bonus:
Lily is continuing to explore different ways in which complex numbers can be multiplied so the
answer is not a complex number. Lily multiplies (2+i) and (a+bi), where a and b are real
numbers, and finds that her answer is not a complex number.
A. Write an equation that expresses the relationship between a and b.

Answers

Lily's error is in the first step, (2+i)^2 ≠ 4 + i^2.

(2+i)^2 = (2+i)(2+i) and you need to FOIL.

(2+i)^2 = (2+i)(2+i)

           = 4 + 2i + 2i + i^2

           = 4 + 4i + (-1)

           = 3 + 4i

Bonus:

If you want to multipy (2+i) by (a+bi) and not end up with a complex number, you'd first FOIL

     (2+i)(a+bi) = 2a + 2bi + ai + bi^2

We know i^2 = -1, so this becomes

                      = 2a + 2bi + ai + b(-1)

                      = 2a + 2bi + ai - b

                      = 2a - b + 2bi + ai

Now, for this not to be complex, we need the imaginary pieces to cancel each other out.  In other words 2bi+ai=0.  For that to happen, 2b + a = 0, or

    2b = -a  or a = -2b

So it would seem that if we pick any b-value and make a = -2b, then we'll end up with a non-complex number.

Let's try b=5, making a = -10

     (2+i)(-10+5i) = -20 + 10i - 10i + 5i^2

The 10i's cancel and 5i^2 = -5, so we're left just with -25.

Describe the end behavior of each function.

1. f(x) = -x³ + 2x³ -x+4



2. f(x)= x² -x² -x -1

Asking for help please, Thank you

Answers

"1. The end behavior of the function f(x) = -x³ + 2x³ -x+4 can be determined by looking at the highest degree term, which is 2x³. Since this term is positive and has an even degree, the end behavior of the function will be the same on both ends. As x approaches negative infinity, the function will approach negative infinity, and as x approaches positive infinity, the function will approach positive infinity. Therefore, the graph of the function will have two arms pointing upwards.

2. The function f(x) = x² -x² -x -1 can also be analyzed by looking at the highest degree term, which is x². However, since the first two terms cancel each other out, we can simplify the function to f(x) = -x -1. As x approaches negative infinity, the function will approach negative infinity, and as x approaches positive infinity, the function will approach negative infinity as well. Therefore, the graph of the function will have a single arm pointing downwards." (ChatGPT, 2023)

What is the measure of angle H? Explain what is the measure of angle i ? explain

Answers

The measure of angle H is given as 67.5 degrees

The measure for angle I is 112.5 degrees

How to solve for angle H

The question tells us that ∠F must be 67.5°

from the sign, the angles H and the angle F are vertical angles.

Hence the value of ∠F = ∠H

∠H = 67.5°

what is the measure of angle i ?

From the transversal, we can see that the angle E and angle I are corresponding angles

to get angle E

= 67.5° + ∠E = 180 (angles on a straight line)

∠E = 180 - 67.5

∠E = 112.5 degrees

Since ∠E and ∠I are corresponding angles, ∠I = 112.5 degrees

Read more on transversals here:https://brainly.com/question/24607467

#SPJ1

The stop sign is a regular octagon, so the measure of ∠F must be 67.5°. What is the measure of angle H? Explain what is the measure of angle i ? explain

Other Questions
According to Hamlet, how does he think Claudius will react to his "changes" in the play?O He will ignore itHe will appear guiltyO He will laughO He won't notice I need help with number 3 ASAP please! cos^2u- cos u sec u= cot^2 uPLEASE I NEED HELP CASE STUDY [30 Marks] Read the case study and answer thequestions that follow: MEGAZONE LIMITED Megazone Limited is wellknown for its focus on innovation and this is highlighted in thecompanys w A system of two linear equations has no solution. The first equation is -7x + y = 3. select the second equation that will make this system have no solution.A. 3x+y=3B. -7x+y=-10C. 3x+y=-7D. 4x+y=3 G assume the following production function n y 1 100 100 2 130 3 146 4 152 6 assuming that the product sells at the market price $1. 0. How many workers will the firm hire if the market wage is $16. 00? Estimating Proportions The quality control people at your company have tested a sample of 450 widgets and found that 23 were defective. What is your interval estimate (confidence interval) for the average proportion of defective widgets (choose your confidence level)? In circle K with mJKL=60mJKL=60 and JK=17JK=17 units find area of sector JKL. Round to the nearest hundredth. Beverly has a bag of marbles that weighs 30 grams. She knows that each marble weighs 1.5 grams and the bag weighs 1.5 grams. Which equation could she use to determine how many marbles are in the bag? Select all that apply. (1.5)x + 1.5 = 30 30 x = 2(1.5) (1.5)(30) = 1.5x 1.5 + x = 30 1.5x = 30 1.5 First off-let's check out Wikipedia.a) Is this a reliable resource?Why or why not?b) How does the information get updated here? The question is in the image belowI am stuck on Part 2, and where it says 2 that's all I gotGrade 8 a 2kg toy car moves at a speed of 5 m/s. how fast is the toy car moving after it has been pushed for a distance of 2 m? carnival cruise lines wants to target its new line of cruise options to families with young children. which basis will they likely use to segment the market? What were the key programs of the Second New Deal,and in what ways did they extend federal aid? 2. Place a check mark next to each choice that describes Abigail Williams.Rovivery obedientpious and religiousuntrustworthy and manipulativecapable of controlling the group of girlsinterested in having an affair with Reverend Hale B) Which other two triangles (from A, B, C and D) are congruent to each other? Please help! (a) Find A + B graphically.magnitude mdirection counterclockwise from the +x axis(b) Find A B graphically.magnitude mdirection counterclockwise from the +x axis(c) Find B A graphically.magnitude mdirection counterclockwise from the +x axis(d) Find A 2B graphically.magnitude mdirection counterclockwise from the +x axis What is the area of a trapezoid with base lengths 8 in and 10 in and aheight of 9 in? Which of the following is an example of a transverse wave?A. longitudinal waves traveling through the groundB. sound waves traveling through the airC.light waves traveling from the sunD.All of these Below, a pre-mRNA is shown and the complete, edited mRNA is shown. a) in the complete mRNA, use a green pen or highlighter to highlight the methyl G cap. b) In the complete mRNA, use a red pen or highlighter to highlight the poly A tail. c) In both the pre-mRNA and complete mRNA, highlight each exon with diffeent colors, to show the pieces of pre m-RNA that are in both. Heres the pre-mRNA: AUGAACCCGGGACGCGCGAUGCCCUAUU. Heres the complete edited mRNA: GAUGAACCGCGCGAUAUUAAAAAAAAAAAAAAAA To help pay for culinary school, Austin borrowed money from his credit union. He took out a personal, amortized loan for $56,000 , at an interest rate of 5.25% , with monthly payments for a term of 15 years. For each part, do not round any intermediate computations and round your final answers to the nearest cent. If necessary, refer to the list of financial formulas. (a) Find Austin's monthly payment. (b) If Austin pays the monthly payment each month for the full term, find his total amount to repay the loan. (c) If Austin pays the monthly payment each month for the full term, find the total amount of interest he will pay.