Owen's Muffin Extravaganza recorded how many of each type of muffin it recently sold.
bran muffins 25
blueberry muffins 12
poppy seed muffins 3
chocolate chip muffins 10
Considering this data, how many of the next 16 muffins sold would you expect to be bran muffins?

Answer:

a

Step-by-step explanation:

The formula to calculate simple interest is:

I = P * r * t

Where:

I = Interest

P = Principal amount

r = Rate of interest

t = Time period

Given:

Principal amount (P) = $1,700

Rate of interest (r) = 8% per annum

Time period (t) = 4 years

Using the formula of simple interest:

I = P * r * t

I = 1,700 * 0.08 * 4

I = $544

Therefore, the total interest on a 4-year term loan of $1,700 with a simple annual interest rate of 8% is $544.

Answer: A. $544

Answer: x=7 y=5

Step-by-step explanation:

I believe this is the answer to the question  

The median shows that the average number of students per middle school classroom in both districts is 24, while the mean shows that the average number of students per middle school classroom in one district is 24 and the other is 25.  

Median is the middle value of a set of data. It is the value that divides the data set into two equal halves. It is an important measure of central tendency and is used to compare sets of data.  

The difference between the mean number of students per middle school classroom in each school district is 2 students. The difference between the median number of students per middle school classroom in each school district is 0 students.

Based on the number of students shown for each school district, the median would provide the most accurate picture of the number of students in a middle school classroom, as there are some extreme values that would affect the mean but not the median.

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Answer:

x = 10 (B)

Step-by-step explanation:

Use trigonometry:

[tex] \sin(30°) = \frac{5}{x} [/tex]

[tex] \frac{1}{2} = \frac{5}{x} [/tex]

Cross-multiply to find x:

[tex]x = 2 \times 5[/tex]

[tex]x = 10[/tex]

Answer:

A equals 13.5 centimeters

The equivalent fraction of the given expression is: 2(y - 2x)(-5x + 3y)

The fraction expression is given as;

[(-2/x) + (5/y)]/[(3/y) - (2/x)]

Finding the common denominators and writing the numerators above common denominators gives:

[(2y - 4x)/xy]/[(-5x + 3y)/xy)]

Usually we divide a fraction by multiplying its' reciprocal and we have;

[(2y - 4x)/xy] * [(xy/(-5x + 3y)]

Thus, this gives us the expression:

(2y - 4x)/(-5x + 3y)

= 2(y - 2x)(-5x + 3y)

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Let x be the number of text messages that your older sister sends per day. Then we can write an equation based on the given information:

x + 12 = 26

We can solve for x by subtracting 12 from both sides of the equation:

x = 26 - 12

x = 14

Therefore, your older sister sends about 14 text messages per day.

Therefore, the value of hydraulic conductivity using the Thiem equation is approximately 10.67 ft/day.

An equation is a mathematical statement that indicates that two expressions are equal. It typically consists of variables, constants, and mathematical operations such as addition, subtraction, multiplication, and division. The expressions on both sides of the equation are separated by an equal sign "=" which means that the two expressions have the same value. Equations are used to model relationships between variables, solve problems, and make predictions in various fields of science, engineering, economics, and mathematics. They are an essential tool in algebra, calculus, and other branches of mathematics.

Here,

To compute the value of hydraulic conductivity using the Thiem equation, we need to substitute the given values into the equation:

K = (Q / π) * ((h2 - h1) / log(r2/r1))

where:

Q = pumping rate = 78,000 ft³/d

h1 = head at the pumping well = 260 ft ASL

h2 = head at the observation well 385 ft away = 291 ft ASL

r1 = distance from the pumping well to the observation well 125 ft away = 125 ft

r2 = distance from the pumping well to the observation well 385 ft away = 385 ft

Substituting the values, we get:

K = (78,000 / π) * ((291 - 260) / log(385/125))

K = 10.67 ft/day

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Answer:

Rounding to the nearest hundredth, the area of the shaded region is approximately 167.91 square yards.

Step-by-step explanation:

To find the area of the shaded region between two circles with the same center, we need to subtract the area of the smaller circle from the area of the larger circle.

The area of the larger circle is:

A_outer = πr_outer^2

= π(11.9 yd)^2

≈ 445.03 yd^2

The area of the smaller circle is:

A_inner = πr_inner^2

= π(9.4 yd)^2

≈ 277.12 yd^2

Therefore, the area of the shaded region is:

A_shaded = A_outer - A_inner

≈ 445.03 yd^2 - 277.12 yd^2

≈ 167.91 yd^2

Hope this helps! Sorry if it doesn't. If you need more help, ask me! :]

Answer:

The cost of a specialty pizza is $19.49.

Step-by-step explanation:

To write a subtraction equation that could be used to find the cost c of a specialty pizza, we need to set up an equation that represents the relationship between the cost of a one-topping pizza and the cost of a specialty pizza.

The problem states that a one-topping pizza costs $6.50 less than a specialty pizza. Therefore, we can subtract $6.50 from the cost of a specialty pizza to get the cost of a one-topping pizza:

Cost of specialty pizza - $6.50 = Cost of one-topping pizza

We can rearrange this equation to solve for the cost of the specialty pizza:

Cost of specialty pizza = Cost of one-topping pizza + $6.50

Now, we can substitute the given value for the cost of a one-topping pizza:

Cost of specialty pizza = $12.99 + $6.50

Simplifying the expression, we get:

Cost of specialty pizza = $19.49

Therefore, the cost c of a specialty pizza is $19.49.

Hope this helps! I'm sorry if it doesn't. If you need more help, ask me! :]

The time between the injections that is injected again when the dosage reaches 9 is solved to be 1.8 to the nearest tenth

The information given by the problem include the expression

D(h) = 20e^(-0.45h)

The expression is an exponential function that shows the relationship between time and the dosage in milligrams  

given that D = 9 we find h

D(h) = 20e^(-0.45h)

9 = 20e^(-0.45h)

9/20 = e^(-0.45h)

take ㏑ of both sides

㏑(9/20) = -0.45h

isolating h by dividing by -0.45

h = ㏑(9/20) / -0.45

h = 1.774

h = 1.8 to the nearest tenth

This shows that the time is 1.8 hours

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Answer:

y= -x - 3 is correct

Step-by-step explanation:

Using set theory, the element in each of the set are, A - B = {3, 5}, (A - B)^c = {2, 4, 6, 7, 8, 9, 10, 11}, U - (A - B)^c = {3, 5}, (A \cup B)^c = {2, 4, 6} and (A^c U B^c)^c = {7, 9, 11}.

The given sets are:

U = {2,3,4,5,6,7,8,9,10,11}

A = {3,5,7,9,11}

B = {7,8,9,10,11}

We can use these sets to find the following:

1. A - B: The elements in set A that are not in set B are {3, 5}.

2. (A - B)^c: The complement of set A - B in U contains all the elements in U that are not in A - B. These elements are {2, 4, 6, 7, 8, 9, 10, 11}.

3. U - (A - B)^c: This set contains all the elements in U that are not in the complement of A - B. These elements are {3, 5}.

4. (A U B)^c: This set contains all the elements in U that are not in the union of sets A and B. The union of A and B is {3, 5, 7, 8, 9, 10, 11}, so the complement is {2, 4, 6}.

5. (A^c U B^c)^c: This set contains all the elements in U that are in neither the complement of set A nor the complement of set B. The complement of set A is {2, 4, 6, 8, 10} and the complement of set B is {2, 3, 4, 5, 6}. The union of these two sets is {2, 3, 4, 5, 6, 8, 10}, so the complement of this set in U is {7, 9, 11}.

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Answer:

4+5/8

or

5/8+4

Step-by-step explanation:

"increased by" is adding, and "quotient" id dividing two numbers.

The mathematical expression '4 increased by the quotient of 5 and 8' is written as 4 + 5/8 in standard mathematical notation, meaning you first divide 5 by 8 and then add the result to 4.

The sequence of operations described can be converted into an expression in the following way: In terms of mathematics, the term 'increased by' refers to addition. The 'quotient of 5 and 8' refers to the result of dividing 5 by 8. Therefore, the expression can be written as '4 + 5/8'.

So, the mathematical expression '4 increased by the quotient of 5 and 8' becomes 4 + 5/8 in standard mathematical notation. This means you first divide 5 by 8 and then add the result to 4.

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Answer: Right Picture

Step-by-step explanation:

Mark me as brainleanst

Answer:

Step-by-step explanation:

To calculate the payback period of the investment, we need to find out how long it will take for the company to recover the initial investment of 80000000 through the cash flows generated by the investment.

Step 1: Calculate the cumulative cash flow for each year.

Year 1: 25000000

Year 2: 25000000 + 25000000 = 50000000

Year 3: 50000000 + 20000000 = 70000000

Year 4: 70000000 + 20000000 = 90000000

Step 2: Determine the year in which the cumulative cash flow exceeds the initial investment.

Based on the calculations above, the cumulative cash flow exceeds the initial investment of 80000000 in Year 4.

Step 3: Calculate the payback period.

The payback period is the time it takes for the cumulative cash flow to equal the initial investment. In this case, the payback period is the end of Year 3 plus the portion of Year 4 needed to recover the remaining investment, which is calculated as follows:

80000000 - 70000000 = 10000000

10000000 ÷ 20000000 = 0.5

Therefore, the payback period for this investment is 3.5 years.

To confirm this result, we can also calculate the cumulative cash flow at the end of Year 3 and check that it is less than the initial investment, while the cumulative cash flow at the end of Year 4 exceeds the initial investment:

Year 1: 25000000

Year 2: 25000000 + 25000000 = 50000000

Year 3: 50000000 + 20000000 = 70000000 (cumulative cash flow at end of Year 3)

Year 4: 70000000 + 20000000 = 90000000 (cumulative cash flow at end of Year 4)

Since the cumulative cash flow at the end of Year 3 is less than the initial investment and the cumulative cash flow at the end of Year 4 exceeds the initial investment, we can confirm that the payback period is between Year 3 and Year 4, or 3.5 years.

Answer:

??

Step-by-step explanation:

is there a picture or something?

Tt would take Maurice and Olinda approximately 47.37 minutes

What is work done?

Work done in physics is the dot product of force and displacement. When a force applied on an object results in a displacement, it is said to be work is done on the object.

Let's denote the time it takes both Maurice and Olinda working together to weed the garden as t.

We can use the formula: 1 / t = 1 / a + 1 / b

Plugging in the given values, we get: 1 / t = 1 / 45 + 1 / 50

1 / t = (50 + 45) / (50 * 45) = 95 / 2250

Then, we can invert both sides of the equation to get: t / 1 = 2250 / 95

Simplifying the right-hand side by dividing both the numerator and the denominator by 5, we get:

t = 2250 / 95 = 47.37 minutes (rounded to two decimal places)

Therefore, it would take Maurice and Olinda approximately 47.37 minutes to weed the garden if they work together.

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a) The length of x is 5 cm. b)  the total surface area of the frustum is 61[tex]\pi[/tex]√802 + 16[tex]\pi[/tex] square cm (in terms of π).

A frustum has two bases, which are usually parallel to each other and are either circular or polygonal in shape. The height of the frustum is the perpendicular distance between the two bases, and the slant height is the distance between the apex of the frustum (the point where the original cone or pyramid was cut off) and any point on the perimeter of either base.

a. To find the value of x, we can use the similar triangles formed by the two cones. Let the radius of the small cone be y cm, then we have:

y/x = (35-7)/35 [Using the similarity of triangles]

Simplifying this expression, we get:

y = x(28/35) = 4x/5

Now, we know that the difference in the areas of the two circular bases of the frustum is equal to the area of the missing part. Using this fact, we can find the value of x as:

[tex]\pi[/tex](6²) - [tex]\pi[/tex](y²) = [tex]\pi[/tex](x²) - [tex]\pi[/tex]( (4x/5)² )

Simplifying this expression and solving for x, we get:

x = 5 cm

Therefore, the value of x is 5 cm.

b. The total surface area of the frustum can be calculated as the sum of the curved surface area of the small cone and the curved surface area of the frustum itself.

Curved surface area of the small cone = [tex]\pi[/tex](y²) = [tex]\pi[/tex](4²) = 16[tex]\pi[/tex]

Curved surface area of the frustum = [tex]\pi[/tex](6² + x²) × l

where l is the slant height of the frustum. To find the value of l, we can use the Pythagorean theorem:

l² = (35-7)² + (6-x)²

l² = 784 + (6-x)²

l = √[784 + (6-x)²]

Substituting the value of x, we get:

l = √[784 + (6-5)²] = √802

Therefore, the total surface area of the frustum is:

[tex]\pi[/tex](6² + x²) × √802 + 16[tex]\pi[/tex]

= [tex]\pi[/tex](6² + 5²) × √802 + 16[tex]\pi[/tex]

= 61[tex]\pi[/tex]√802 + 16[tex]\pi[/tex]

Hence, the total surface area of the frustum is 61[tex]\pi[/tex]√802 + 16[tex]\pi[/tex] square cm (in terms of [tex]\pi[/tex]).

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Answer: the equation have two solutions: 0.25 and 0.75

[tex]x=\frac{1}{4}[/tex]  or  [tex]x=\frac{3}{4}[/tex]

Step-by-step explanation:

Notice the terms [tex]x+x^2+x^3+x^4+...+x^n[/tex] is just a geometric series (since -1<x<1)

A geometric series is given by the form

[tex]1+x+x^2+x^3+x^4+...+x^n = \frac{1}{1-x}[/tex]
This is
[tex]x+x^2+x^3+x^4+...+x^n = \frac{1}{1-x} -1[/tex]
plugging in in the equation

[tex]-1+\frac{1}{x} +\frac{1}{1-x} -1=\frac{10}{3}[/tex]

grouping terms

[tex]\frac{1}{x} +\frac{1}{1-x} =\frac{16}{3}[/tex]
groupings the fractions

[tex]\frac{1-x+x}{(x)(1-x)}=\frac{1}{(x)(1-x)} =\frac{16}{3}[/tex]

this leads to an simplified quadratic equation since X cannot be zero (notice the initial 1/x term)

[tex]3=16(x^2-x)[/tex]
the solution for this quadratic equation is just

[tex]x=\frac{1}{4}[/tex]  or  [tex]x=\frac{3}{4}[/tex]

Answer:

  1/4 or 3/4

Step-by-step explanation:

You want the value of x in the infinite sum ...

  -1 +1/x +x +x² +x³ +...  = 10/3

for |x| < 1.

After the 2nd term, this looks like a geometric series with a common ratio of x. If we define the series sum as ...

  S = 1/x +1 +x +x² +x³ +...

we see that the equation of interest is ...

  S -2 = 10/3

The series sum is that of a geometric series with first term 1/x and common ratio x:

  S = (1/x)(1/(1 -x)) = 1/(x(1-x))

Substituting for S in the above, we have the equation ...

  1/(x(1-x)) -2 = 10/3

This resolves to a quadratic that will have 2 real roots:

  1/(x(1 -x)) = 16/3 . . . . add 2

  x(1 -x) = 3/16 . . . . . . . invert both sides

  x² -x +3/16 = 0 . . . . . .  subtract the left side expression

  (x -3/4)(x -1/4) = 0 . . . . . factor

Solutions are the values of x that make these factors zero:

  x = 1/4 or x = 3/4

Answer: -1/2

Step-by-step explanation:

To find the slope: rise/run

starting from the point (0,2), you go up 1 to reach the line

Therefore 1 is your rise.

Then go right 2 units and you hit the line again.

Therefore the slope is 1/2.

But the linear line is going downwards, so it is a negative slope

Therefore your final answer is:

-1/2

Solving for μ and σ simultaneously gives: μ = 3.2 hours (rounded to 1 decimal place) and σ = 0.426 hours (rounded to 3 decimal places)

What is Standard Deviation ?

Standard deviation is a statistical measure that describes the amount of variation or dispersion in a set of data. It measures how spread out the data is from its mean or average.

Let the mean of the population sleep time be μ and the standard deviation be σ.

From the given information, we know that the distribution of sample means of sleep time follows a normal distribution with mean μ and standard deviation σ/√40 (since each sample size is 40).

We are also given that 5% of the sample means are less than 3 hours and 5% of the sample means are more than 3.4 hours.

Using a standard normal distribution table, we can find the corresponding z-scores for these probabilities:

P(Z < z) = 0.05 when z = -1.645

P(Z > z) = 0.05 when z = 1.645

Now we can use the formula for z-score:

z = (X'  - μ) / (σ / √n)

where X' is the sample mean, n is the sample size (which is 40 in this case).

For the lower bound, we have:

-1.645 = (3 - μ) / (σ / √40)

For the upper bound, we have:

1.645 = (3.4 - μ) / (σ / √40)

Therefore, Solving for μ and σ simultaneously gives: μ = 3.2 hours (rounded to 1 decimal place) and σ = 0.426 hours (rounded to 3 decimal places)

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Okay so you want to make all of the fractions have a common denominator. Think of the lowest number that 3 and 5 go into, the answer you should get is 15. So 15 is the common denominator.

Now we're going to make 1/3 have a denominator of 15. 1/3 of 15 would be 5. You get that by figuring out what you have to multiply 3 by to get 15 which is 5. Then you multiply 5 and 1 and you get 5.  The answer you will get will be 5/15 which is equal to 1/3.

Next we're going to make 4/5 have a denominator of 15. 4/5 of 15 would be 12/15. You can get this by figuring out what you have to multiply 5 by to get 15 which is 3. Then you take 3 and multiply it by 4 to get that 12 in 12/15. The answer 12/15 is equal to 4/5 of 15.

So now you have 5/15 + a = 12/15.

The denominator of the fraction that "a" will be is 15 because that is what we made the common denominator.

So what we have is 5/15 + x/15 = 12/15.

Think of what you have to add to 5 to get 12. (The answer is 7)

So a is equal to 7/15

Your final answer should be 5/15 + 7/15 = 12/15

Answer:

P(x)=[tex](40000)( 0.98)^x[/tex]

A=40000    B=0.98
P(7)= 34700

Step-by-step explanation:

Notice the population can be modeled as:

P(x)=[tex]A B^x[/tex]

For X=0 P(0)=40000=A (Initial population)
So A=40000
For x=1 (one year after) P=39200

[tex]39200=40000 B^1[/tex]
solving for B
[tex]B=\frac{39200}{40000} =0.98[/tex]
So B=0.98

So the population can be modeled as

P(x)=[tex](40000)( 0.98)^x[/tex]

Now at 7 years:

P(7)=[tex](40000)( 0.98)^7[/tex]= 34725.02133
Needs to be rounded to the nearest hundred
This is 34700 bonobos (7 years after the study began)

Answer:

w = 6in, l = 10in

Step-by-step explanation:

Area of a rectangle is [tex]A=l*w[/tex]

and [tex]l = 4 + w[/tex]

We can solve for length and width by substituting these values for the equation.

[tex]60in^2=(4+w)*w[/tex]

[tex]60in^2=4w+w^2[/tex]

[tex]0 = w^2 + 4w + 60in^2[/tex]

factor out the equation.

[tex]0= (w+10)(w-6)[/tex]

therefore w = 6in (tossing out the negative solution)

which means

[tex]l = 4 + w[/tex]

[tex]l = 6in + 4[/tex]

l = [tex]10in[/tex]

Hope this helps!
Brainliest is much appreciated!

[tex]~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill &\$3000\\ r=rate\to 4\%\to \frac{4}{100}\dotfill &0.04\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{\underline{annually}, thus once} \end{array}\dotfill &1\\ t=years\dotfill &6 \end{cases} \\\\\\ A = 3000\left(1+\frac{0.04}{1}\right)^{1\cdot 6} \implies A \approx 3795.96 \\\\[-0.35em] ~\dotfill[/tex]

[tex]~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill &\$3000\\ r=rate\to 4\%\to \frac{4}{100}\dotfill &0.04\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{\underline{quarterly}, thus four} \end{array}\dotfill &4\\ t=years\dotfill &6 \end{cases} \\\\\\ A = 3000\left(1+\frac{0.04}{4}\right)^{4\cdot 6} \implies A \approx 3809.20 \\\\[-0.35em] ~\dotfill[/tex][tex]~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill &\$3000\\ r=rate\to 4\%\to \frac{4}{100}\dotfill &0.04\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{\underline{monthly}, thus twelve} \end{array}\dotfill &12\\ t=years\dotfill &6 \end{cases} \\\\\\ A = 3000\left(1+\frac{0.04}{12}\right)^{12\cdot 6} \implies A \approx 3812.23 \\\\[-0.35em] ~\dotfill[/tex]

[tex]~~~~~~ \textit{Continuously Compounding Interest Earned Amount} \\\\ A=Pe^{rt}\qquad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill & \$3000\\ r=rate\to 4\%\to \frac{4}{100}\dotfill &0.04\\ t=years\dotfill &6 \end{cases} \\\\\\ A = 3000e^{0.04\cdot 6} \implies A \approx 3813.75[/tex]

Answer:

4/3 from x = 2 to x = 5.

Step-by-step explanation:

What is Lagrange mean value theorem?

Lagrange mean value theorem states that, if a function f is continuous over the closed interval [a, b] and differentiable over the open interval (a, b), then there must be at least one point c in the interval (a, b) where the slope of the tangent at the point c is equal to the slope of the tangent through the curve's endpoints, resulting in the expression f'(c) = {F(b) -F(a)}/(b-a)

According to the given graph,

At point x = 2,

F(2) = 3

At point x = 5,

F(5) = 7

Since the formula for the average rate of change of the function between x = a and x = b is,

The average rate of change = {F(b) -F(a)}/(b-a)

Here a = 2, b = 5 and F(2) = 3, F(5) = 7

Substitute the values in the formula,

So the average rate of change = (7 - 3)/(5 - 2) = 4/3.

Hence, the average rate of change of the function is 4/3.

Check the picture below.

[tex]\begin{array}{llll} f(x)~from\\\\ x_1 ~~ to ~~ x_2 \end{array}~\hfill slope = m \implies \cfrac{ \stackrel{rise}{f(x_2) - f(x_1)}}{ \underset{run}{x_2 - x_1}}\impliedby \begin{array}{llll} average~rate\\ of~change \end{array} \\\\[-0.35em] ~\dotfill\\\\ \begin{cases} x_1=2\\ x_2=5 \end{cases}\implies \cfrac{f(5)-f(2)}{5 - 2}\implies \cfrac{7-3}{5-2}\implies \cfrac{4}{3}[/tex]

Answer:

  (f∘g)(1) = 2; (f∘g)'(1) = 2

  (f∘g)(2) = -2; (f∘g)'(2) = -2

Step-by-step explanation:

You want (f∘g)(x) and (f∘g)'(x) for x=1 and x=2 given the function values and derivatives in the table.

This composition means f(g(x)). The value is found by first determining the value of z = g(x), then using that to find the value of f(z).

For x=1, the value of g(1) is seen to be -2.

For x=-2, the value of f(-2) is seen to be 2.

This means f(g(1)) = 2.

For x=2, the value of g(2) is 0.

For x= 0, the value of f(0) is -2.

This means f(g(2)) = -2.

This is a little trickier, as you need to find the derivative of the composition:

  f(g(x))' = f'(g(x))·g'(x)

In the attached table, we have made a column for f'(g(x)) to help find this product.

For x=1, f'(g(1)) = f'(-2) = 1; and g'(1) = 2, so f'(g(1))g'(1) = 1·2 = 2 = (f∘g)'(1)

For x=2, f'(g(2)) = f'(0) = 2; and g'(2) = -1, so f'(g(2))g'(2) = 2(-1) = -2 = (f∘g)'(2)

Answer:

Step-by-step explanation:

[tex]V=\pi r^2 h[/tex]

Substitute [tex]h=l,r=2,V=150,[/tex] we get

[tex]150=\pi \times 2^2 \times l[/tex]

[tex]150=4\pi l[/tex]

[tex]l=\frac{150}{4\pi}=11.94cm[/tex]

Answer:

No solution

Step-by-step explanation:

y = 2x + 1 _____(equ 1)

2x - y = 3 _____(equ 2)

from equ 1

y = 2x + 1

2x + 1 = y

2x = y - 1

x = (y - 1)/2

substitute x = (y - 1)/2 into equ 2

2x - y = 3

2((y-1)/2) - y = 3

(2y - 2)/2 - y = 3

y - 1 - y = 3

y - y = 3 + 1

0 = 4

Hello and best regards sanungapatricio1985

This equation has no solution, since -1 cannot be equal to 3. Therefore, the system has no solution.

We have the following equations:

                ⇒ y = 2x + 1

                ⇒ 2x - y = 3

The substitution method is a common method for solving systems of linear equations. It consists of isolating one of the variables from one of the equations and substituting the expression obtained in the other equation to eliminate that variable and obtain an equation with a single variable, which can be solved to find the value of that variable. Then, the found solution can be substituted into any of the original equations to find the value of the other variable.

From the first equation we have a good substitution candidate:

                ⇒ y = 2x + 1

Now we have to plug y = 2x + 1 found from the first equation, into the second equation 2x - y = 3, to find that:

                ⇒ 2x - y = 3

                ⇒ 2x - (2x + 1) = 3

                ⇒ 2x - 2x - 1 = 3

Based on the previous results, the system has no solution.

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