i need help with this asap please check work when done

I Need Help With This Asap Please Check Work When Done

Answers

Answer 1

Given the parent function

[tex]y=\cos x[/tex]

From the graph,

The range of the function is best modelled by the interval

Comparing the function with general equation of the cosine function,

[tex]B=1[/tex]

The formula for the period is,

[tex]T=\frac{2\pi}{B}[/tex]

There


Related Questions

Use the definition of the derivative to find the derivative of the function with respect to x. Show steps

Answers

The derivative of the function y = -1/x-2 is 1/(x-2)².

Given, the function is y = -1/x-2

Differentiate the function with respect to x.

dy/dx = d/dx (-1/x-2)

the function is in the form of :

d/dx [f(x)g(x)] = f(x)d/dx((x)) + g(x)d/dx(f(x))

here d/dx [f(x)g(x)]  = d/dx [(-1)(1/x-2)]

therefore, d/dx [(-1)(1/x-2)] = (-1)d/dx(1/x-2) +(1/x-2)d/dx(-1)

⇒ d/dx [(-1)(1/x-2)] = (-1)(-1)(x-2)⁻¹⁻¹ + (1/x-2)d/dx(0)

⇒ d/dx [(-1)(1/x-2)] = 1(x-2)⁻² + 0

⇒  d/dx [(-1)(1/x-2)] = 1/(x-2)²

Hence the derivative of the function is 1/(x-2)²

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help me please I love when I can get help

Answers

To determine in how many pices of 2/3ft can a 9ft long ribbon be cut, you have to divide 9 by 2/3:

[tex]9\div\frac{2}{3}[/tex]

To divide both fractions, first turn the 9 into a fraction by adding 1 as a denominator

[tex]\frac{9}{1}\div\frac{2}{3}[/tex]

Now you have to invert the fraction that is the denominator of the division

[tex]\frac{2}{3}\to\frac{3}{2}[/tex]

And multiply it by the first fraction

[tex]\frac{9}{1}\cdot\frac{3}{2}=\frac{9\cdot3}{1\cdot2}=\frac{27}{2}\cong13.5[/tex]

She can divide the ribbon in 13 pieces of 2/3ft each

6 minus 3 times a number is less than 30. Find the number:

Answers

Answer:

x > -8

Explanations:

Let the number be represented by x:

Three times the number = 3x

Six minus three times the number = 6 - 3x

Six minus three times the number is less than 30:

That can be interpreted mathematically as:

6 - 3x < 30

To find the value of x:

Step 1: Collect like terms

- 3x < 30 - 6

-3x < 24

Step 2: Divide both sides by 3:

[tex]\frac{-3x}{3}=\text{ }\frac{24}{3}[/tex]

-x < 8

Multiply both sides by (-1) and change the < sign to >

(-1) (-x) > 8 x(-1)

x > -8

if 3x +6 = 18 what is 10x -2

Answers

38

1) Starting from the first equation

3x +6 = 18 Subtract 6 from both sides

3x = 18 -6

3x = 12 Divide both sides by 3

x =4

2) Since x =4, let's plug that into the second expression 10x -2 to find out "what is 10x -2"

10x -2 Replace x, by 4

10(4) -2 Effectuate the multiplication

40 -2

38

Hence, the answer is 38

Deck PlanOutside* EdgeWall A10 feetDoorway13 feet-10 feetWall BThe deck will have the shape of one fourthof a circle. What is the best estimate of thearea (A) of this deck?(Area of circle = tr2)πr)(Use 3.14 for it.)

Answers

18) the best estimate will be 75 square feet (option G)

Explanation:

18) radius = 10ft

let π = 3.14

We are told the deck will have 1/4 the area of a circle. We need to first find the area of a circle.

Area of circle = πr²

[tex]\begin{gathered} Area\text{ of circle = 3.14 }\times\text{ 10}^2 \\ Area\text{ of circle = 314 ft}^2 \end{gathered}[/tex]

Next, we will divide the area by 4:

[tex]\begin{gathered} Area\text{ of the deck = }\frac{area\text{ of circle}}{4} \\ Area\text{ of the deck = }\frac{314}{4} \\ \\ Area\text{ of the deck = 78.5 ft}^2 \end{gathered}[/tex]

From the options, the one close to the result we got is 75 square feet

Hence, the best estimate will be 75 square feet (option G)

Use the words to complete the sentences :1) Downards,2) 15,3) Ascending,4) does,5) upwards,6) Positive,7) Does not,8) Negative,9) Descending,10) 16,11) 3, 12) 3.51) The Graph a plane -----. 2) The line is slanting ------- and therefore has a ------ slope.3) It takes the plane ------ seconds to touch the ground.4) The plane starts at ------- kilometers in the sky .5) Graph ------ touch the origin (0, 0) .

Answers

According to the given graph, we have the following:

1) The graph represents a plane descending.

2) The line is slanting downwards and therefore has a negative slope.

3) It takes the plane 15 seconds to touch the ground.

4) The plane starts at 3 kilometers in the sky.

5) Graph does not touch the origin (0,0).

The given graph shows a decreasing line, starting at y = 3, and reaching y = 0 when x = 15.

Determine weather it is a function, and state it’s domain and range.

Answers

Find the inverse of:

[tex]f(x)=(3x-24)^2[/tex]

The variable x can take any real value and the function f(x) exists. This means

the domain of f(x) is (-∞, +∞).

Now find the inverse function.

[tex]\begin{gathered} y=(3x-24)^2 \\ \pm\sqrt[]{y}=3x-24 \\ \pm\sqrt[]{y}+24=3x \\ x=\frac{\pm\sqrt[]{y}+24}{3} \\ x=\pm\frac{1}{3}\sqrt[]{y}+8 \end{gathered}[/tex]

Swapping letters, we get the inverse function:

[tex]y=\pm\frac{1}{3}\sqrt[]{x}+8[/tex]

For each value of x, we get two values of y, thus this is not a function.

The domain of the inverse is restricted to values of x that make the square root exist, thus the domain is x ≥ 0, or [0, +∞)

The range of the inverse is the domain of the original function, that is, (-∞, +∞)

Function: No

Domain: [0, +∞)

Range: (-∞, +∞)

The choice to select is shown below.

please help me work through this homework problem! thank you!

Answers

Given:

Given the function

[tex]y=3+\frac{3}{x}+\frac{2}{x^2}[/tex]

and a point x = 3.

Required: Equation of the line tangent to y at x = 3.

Explanation:

The derivative of a function is he slope of the tangent line of the function at a given point. So, finding the derivative gives the slope of the tangent line.

[tex]y^{\prime}=-\frac{3}{x^2}-\frac{4}{x^3}[/tex]

Substitute 3 for x into the derivative.

[tex]\begin{gathered} y^{\prime}|_{x=3}=-\frac{3}{3^2}-\frac{4}{3^3} \\ =-\frac{31}{27} \end{gathered}[/tex]

Therefore, the slope of the tangent line is -31/27.

Substitute 3 for x into y.

[tex]\begin{gathered} y|_{x=3}=3+\frac{3}{3}+\frac{2}{3^2} \\ =3+1+\frac{2}{9} \\ =4+\frac{2}{9} \\ =\frac{38}{9} \end{gathered}[/tex]

(3, 38/9) is the only point on the tangent line where it intersects the original graph.

Plug these coordinates along with slope into the general point-slope form to find the equation.

[tex]\begin{gathered} y-y_1=m(x-x_1) \\ y-\frac{38}{9}=-\frac{31}{27}(x-3) \end{gathered}[/tex]

Solving for y will give the equation in slope-intercept form.

[tex]\begin{gathered} y=-\frac{31}{27}(x-3)+\frac{38}{9} \\ =-\frac{31}{27}x+\frac{69}{9} \end{gathered}[/tex]

Final Answer: The equation of the tangent line is

[tex]y=-\frac{31}{27}x+\frac{69}{9}[/tex]

I need to explain the mistake he made and show my work and I need the answer

Answers

The problem is;

-2(x-1) - 2 > 8 - 5x +4+ x

open the parenthesis

-2x + 2 -2 > 8- 5x + 4+ x

collect the like-term

-2x+5x-x > 8+4

2x > 12

divide both-side of the inequality by 2

x>6

The first mistake that was made is adding of the x-variables

It is 2x and not -6x


Solve the inequality and write the solution using:
Inequality Notation:

Answers

The answer of the given inequality is x < 16

Difference between equality and inequality equations

Both mathematical phrases, equations and inequalities, are created by connecting two expressions.The equal sign (=) indicates that two expressions in an equation are believed to be equivalent. The symbols show that the two expressions in an inequality are not always equal: >, <, ≤ or ≥. Or in simple words the equation which has '=' sign is an equality equation while the inequality equation has the signs are >, <, ≤ or ≥.

The inequality expression is ,

(1 * x) /4  < 4  or x/4 < 4

=> x < 4 * 4

=> x < 16

Therefore, the answer is x < 16.

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A batting cage charges a flat fee of $5 to practice and th Write an equation that models the charges (C) in terms of the number of bucket balls (b) that you use: O C = 1.50 b + 5 O C = 5 b + 1.50 6 Ob = 1.60 C + 5 Ob = 5 C + 1.50

Answers

we have

C -----> total charge

b -----> number of buckets of balls

Remmeber that

the equation of the line in slope intercept form is equal to

y=mx+b

where

m is the slope and b is the initial value or y-intercept

In this problem

m=$1.50 per buckey

b=$5

therefore

y=1.50x+5

or

C=1.50b+5

answer is first option

Find area and perimeter of the shape identify the shape

Answers

Part A

The dimensions of the shape shown are given as

length, l = 12 in

breadth (b) = width, w = 4 in

The area of the shape is given as;

[tex]\begin{gathered} A=l\times b \\ A=12\times4 \\ A=48in^2 \end{gathered}[/tex]

Therefore, the area of the shape is 48 square inches.

Part B

The perimeter of a shape is the sum of all the outer sides enclosing the shape

From the above shape, we add all four sides together

[tex]\begin{gathered} P=12+12+4+4 \\ P=32in \end{gathered}[/tex]

Consequently, we can get the perimeter using formula method as well

[tex]\begin{gathered} P=2(l+b) \\ P=2(12+4) \\ P=2(16) \\ P=2\times16 \\ P=32in \end{gathered}[/tex]

Therefore, the perimeter of the shape is 32 inches.

Part C

From the dimension given in the question, since the shape has a length and width, and the length and width are not equal, then the shape is a rectangle.

The shape, therefore, is a rectangle.

Factor the following polynomials completely.(x + y)³ + 1 =

Answers

Given the equation (x + y)³ + 1 , we can assume we have two terms here. These are (x + y)³ and 1. Since both terms are perfect cubes, we can use the sum of cubes formula which is:

[tex]a^3+b^3=(a+b)(a^2-ab+b^2)[/tex]

where a = (x+y) and b = 1.

Therefore, the factors of (x + y)³ + 1 is:

[tex]\begin{gathered} \mleft(x+y\mright)^3+1=(x+y+1)\lbrack(x+y)^2-(x+y)(1)+1^2) \\ (x+y)^3+1=(x+y+1)(x^2+2xy+y^2-x-y+1) \end{gathered}[/tex]

The factor of (x + y)³ + 1 is (x + y + 1)(x² + 2xy + y² - x - y +1).

how do i use a graphing calculator to solve the system.

Answers

Given:

[tex]\begin{gathered} 0.4x\text{ + }\sqrt{2}y\text{ = 1} \\ \sqrt{5}\text{ x + 0.8y = 1} \end{gathered}[/tex]

Using a graphing calculator, we have the graph shown below:

The point of intersection of the equations represents the solution to the system.

Hence, the solution to the system is:

x = 0.216

y = 0.646

Exponential Regression
The table below shows the population, P. (in thousands) of a town after 12 years.
0
72
P 2400
3
2801.27
7
3608.71
12
14
4974.15 5426.17
19
6898.37
(a) Use your calculator to determine the exponential regression equation P that models the set of
data above. Round the value of a to two decimal places and round the value of b to three decimal
places. Use the indicated variables.
P =
(b) Based on the regression model, what is the percent increase per year?
96
(c) Use your regression model to find P when n = 13. Round your answer to two decimal places.
The population of the town after
P =
thousand people
(d) Interpret your answer by completing the following sentence.
years is
thousand people.

Answers

Considering the given table, it is found that:

a. The exponential regression equation is: P(t) = 2408.80(1.059)^t.

b. The yearly percent increase is of 5.9%.

c. P(13) = 5075.

d. The population of the town after 13 years is of 5075.

How to find the exponential regression equation?

The exponential regression equation is found inserting the points into a calculator.

The points are given as follows:

(0, 2400), (3, 2801.27), (7, 3608.71), (12, 4974.15), (14, 5426.17), (19, 6898.37).

Using a calculator, the function is:

2408.80(1.059)^t.

The yearly percent increase rate is calculated as follows:

1 + r = 1.059

r = 1.059 - 1

r = 0.059

r = 5.9%.

Then in 13 years, the population will be given as follows:

P(13) = 2408.80(1.059)^13 = 5075.

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A pizza is to be cut into halves. Each of these halves is to be cut into fourths. What fraction of the pizza is each of thefinal pieces?

Answers

Given:

Each of these halves is to be cut into fourths.

So:.

A pizza is to be cut into halves

since half is represented by 1/2.

So each piece is now

[tex]\frac{1}{2}\text{ of the original.}[/tex]

If each of these halves is to be cut into fourths, then the fraction of final pieces is:

[tex]\begin{gathered} =\frac{1}{2}\times\frac{1}{4} \\ =\frac{1}{8} \end{gathered}[/tex]

Answer:

1/8

Step-by-step explanation:

Fractions

We have 1/2

!/2 is to be cut in 1/4

1/2 * 1/4 = 1/8

1 pointThe 5 consecutive integers below add up to 175. What is the value of x?x-3x-2X - 1ХX + 1

Answers

[tex]\begin{gathered} (x-3)+(x-2)+(x-1)+x+(x+1)=175 \\ 5x-5\text{ = 175} \\ 5x=180 \\ x=36 \end{gathered}[/tex]

Then x=36.

Araceli filled a cone-shaped container with a variety of colored sand to give as a gift to a friend. The volume of a cone is represented by the expression below, where r is the radius of the base of the cone and h is the height of the cone.radius = 3 1/23 5/3 is the height

Answers

The volume of the cone is 45.28 cubic inches.

The amount of sand inside the cone is measured by its volume.

Based on the numbers for the radius and height, the cone's volume is 45.28 cubic inches.

The volume of a cone is the measure of how much space a cone takes up. Cone height and base radius both affect how much space the cone takes up.

The volume of the cone is given by V = [tex]\frac{1}{3}\pi r^{2} h[/tex]

The value of the radius is r = [tex]3\frac{1}{23} = \frac{70}{23}[/tex]

The value of Height is h = [tex]3\frac{5}{3} = \frac{14}{3}[/tex]

So, the Volume of the cone =[tex]V =\frac{1}{3}\pi r^{2} h[/tex]

[tex]V =\frac{1}{3}\pi r^{2} h\\\\V = \frac{1}{3}\pi (\frac{70}{23}) ^{2} \frac{14}{3} \\\\V = 45.28[/tex]

The volume of the cone is 45.28 cubic. inches

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100 POINTS AND BRAINLY FOR THE CORRECT ONLY ANSWER IF U UNDERSTAND THE QUESTION!
A line includes the points (10,6) and (2,7). What is its equation in point-slope form?
Use one of the specified points in your equation. Write your answer using integers, proper fractions, and improper fractions. Simplify all fractions.

PLEASE AND THANK U

Answers

Answer:

[tex]y-6=-\dfrac{1}{8}(x-10)[/tex]

Step-by-step explanation:

To find the equation of a line that passes through two points, first find its slope by substituting the given points into the slope formula.

Define the points:

(x₁, y₁) = (10, 6)(x₂, y₂) = (2, 7)

Substitute the points into the slope formula:

[tex]\implies m=\dfrac{y_2-y_1}{x_2-x_1}=\dfrac{7-6}{2-10}=\dfrac{1}{-8}=-\dfrac{1}{8}[/tex]

Therefore, the slope of the line is -¹/₈.

[tex]\boxed{\begin{minipage}{5.8 cm}\underline{Point-slope form of a linear equation}\\\\$y-y_1=m(x-x_1)$\\\\where:\\ \phantom{ww}$\bullet$ $m$ is the slope. \\ \phantom{ww}$\bullet$ $(x_1,y_1)$ is a point on the line.\\\end{minipage}}[/tex]

To find the equation in point-slope form, simply substitute the found slope and one of the given points into the point-slope formula:

[tex]\implies y-6=-\dfrac{1}{8}(x-10)[/tex]

Suppose that y varies inversely with x, and y = 5/4 when x = 16.(a) Write an inverse variation equation that relates x and y.Equation: (b) Find y when x = 4.y =

Answers

In general, an inverse variation relation has the form shown below

[tex]\begin{gathered} y=\frac{k}{x} \\ k\to\text{ constant} \end{gathered}[/tex]

It is given that x=16, then y=5/4; thus,

[tex]\begin{gathered} \frac{5}{4}=\frac{k}{16} \\ \Rightarrow k=\frac{5}{4}\cdot16 \\ \Rightarrow k=20 \end{gathered}[/tex]

Therefore, the equation is y=20/x

[tex]\Rightarrow y=\frac{20}{x}[/tex]

2) Set x=4 in the equation above; then

[tex]\begin{gathered} x=4 \\ \Rightarrow y=\frac{20}{4}=5 \\ \Rightarrow y=5 \end{gathered}[/tex]

When x=4, y=5.

Given the formula for the perimeter of a rectangle, p=2l+2wwhich answer would you get if you solve for l? p−2w 2 p/w-2 p/2−2w p−2l/2

Answers

If we have:

[tex]p=2w+2l[/tex]

To solve for l we can start by inverting the sides and substracting 2w from both sides so that the term with l becomes alone in the left side:

[tex]\begin{gathered} p=2w+2l \\ 2w+2l=p \\ 2w-2w+2l=p-2w \\ 2l=p-2w \end{gathered}[/tex]

Now, we can divide both sides by 2 so thay the 2 in 2l gets canceled:

[tex]\begin{gathered} 2l=p-2w \\ \frac{2l}{2}=\frac{p-2w}{2} \\ l=\frac{p-2w}{2} \end{gathered}[/tex]

So, the answer we would get is

[tex]\frac{p-2w}{2}[/tex]

The confidence interval on estimating the heights of the students is given as (5.5, 6.5). Find the sample proportion of the confidence interval.

Answers

Answer:

Step-by-step explanation:

Kayla has $37.99 in her checking account. she uses her debit card to make purchases of $26.29 and $22.98 which overdraws her account. her bank charges her account an overdraft fee of $25.00. She then deposits her paycheck for $55.07 from her part time job. what is the balance in her account?

Answers

Aye itz just me, this is the solution:

Initial balance = $ 37.99

Purchase 1 = ($ 26.29)

Purchase 2 = ($ 22.98)

Overdraft fee = ($ 25.00)

Deposit = $ 55.07

______________________

New balance = 37.99 - 26.29 - 22.98 - 25 + 55.07

New balance = $ 18.82

Why would a person pay property taxes?

Answers

to help fund basic services like education, police and fire protection, parks, roads and the courts.

A new statue in a local park has a length (L), width (W), and height (H) (all in feet) that can be expressed by a system of equations. L+W=28L+H=26W+H=22What is the width of the statue?

Answers

To determine the width of the statue:

[tex]\begin{gathered} L+W=28\ldots\ldots..(1) \\ L+H=26\ldots\ldots\ldots(11) \\ W+H=22\ldots\ldots..(111) \end{gathered}[/tex]

A local park has a length (L), width (W), and height (H) (all in feet)

Solve equation 1 and 2 simultaneously,

[tex]\begin{gathered} L+W=28 \\ L+H=26 \\ \text{Subtract equation (1) - (11)} \\ W-H=2\ldots\ldots\ldots(IV) \end{gathered}[/tex]

Solve equation 3 & 4 simultaneously, make W the subject of formular

[tex]\begin{gathered} W+H=22 \\ W-H=2 \\ \text{Add the two equation} \\ 2W=24 \\ \text{divide both side by 2} \\ \frac{2W}{2}=\frac{24}{2} \\ W=12 \end{gathered}[/tex]

Therefore the value of width of the statue = 12 feet

What is the factor 24/28 in simplest form

Answers

Answer:

6/7

Step-by-step explanation:

24/28 they both are commonly divisible by 4,

making them 6/7

ABCD is a parallelogram
BE= 6x+44
ED= -6x-16
Find the length of BD

Answers

The line segment BD has a length of 18 units

How to calculate the length of BD?

The possible figure is added as an attachment

From the question, we have the following parameters:

Name of shape = ABCDShape type = ParallelogramBE = 6x + 44ED = -6x - 16

The lengths BE and ED implies that the point E is between the endpoints B and D

Since the shape is a parallelogram, then the point E is halfway between the endpoints B and D

So, we have

BE = ED

Substitute the known values in the above equation

6x + 44 = -6x - 16

Evaluate the like terms

So, we have

12x = -60

Divide both sides by 12

x = -5

Substitute x = -5 in BE = 6x + 44

So, we have

BE = 6 x -5  + 44

Evaluate

BE = 14

The length is then calculated as

BD = 2 x BE

So, we have

BD = 2 x 14

Evaluate

BD = 18 units

Hence, the length of BD is 18 units

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Jenna bought a package of 2 chicken drumsticks. If the package weighed 0.232 kg, what is the average weight of
each drumstick?

Answers

Answer:

0.116

Step-by-step explanation:

[tex]\frac{0.232}{2}[/tex] = 0.116

Determine which point is the solution to the given system. y= -7/2 x + 32 y= 4/5 x -11

Answers

Answer:

(10, -3)

Step-by-step explanation:

[tex]-\frac{7}{2}x+32=\frac{4}{5}x-11 \\ \\ -35x+320=8x-110 \\ \\ -43x=-430 \\ \\ x=10 \\ \\ \therefore y=-\frac{7}{2}(10)+32=-3[/tex]

Your family decides to go out to dinner to celebrate your brothers graduationfrom high school. The family's meal cost $75. Your waitress did a great job andyour parents decide to leave her a 20% tip. How much tip money should yourparents leave her if they leave her 20%? And what is the total cost of the meal? *

Answers

$75 -----> 100%

x ---------> 20%

[tex]\begin{gathered} x\times100=75\times20 \\ 100x=1500 \\ \frac{100x}{100}=\frac{1500}{100} \\ x=15 \end{gathered}[/tex]

asnwer 1: they leave her $ 15

answer 2: the total cost of the meal is

[tex]75+15=90[/tex]

$ 90

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