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3 years ago

Given p (x) = 5x - 6 what is the value of p ( 2/5)Help me please quick! please

Mathematics

1 answer:

cluponka [151]3 years ago

8 0

Answer:

p(2/5)=-4

Step-by-step explanation:

Plug in 2/5 for x

p(2/5)=5(2/5)-6

Combine like terms

p(2/5)=2-6

p(2/5)=-4

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At a grocery store, the price of a watermelon is determined by how many pounds the watermelon weighs. The price of a watermelon

Alexxx [7]

Answer:

$p=0.60w$

Step-by-step explanation:

Let

p ----> the price of a watermelon in dollars

w ---> the weight of a watermelon in pounds

In this problem we have a proportional relationship

Remember that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $y/x=k$ or $y=kx$

In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin

In this problem

$p=kw$

The value of the constant of proportionality k is the same that the unit rate

Find out the unit rate

Divide the total cost by the total weight

$k=\frac{4.38}{7.3}=\$0.60\ per\ pound$

substitute in the equation

$p=0.60w$

7 0

3 years ago

George plans to cover his circular pool for the upcoming winter season. The pool has a diameter of 20 feet and the cover extends

MariettaO [177]

For the circular cover we have:

A) The area is 379.94 ft²

B) The length of the rope must be 68.2 ft

<h3>How to get the area of the cover?</h3>

Remember that the area of a circle of radius R is given by the formula:

$A = pi*R^2$

Where pi = 3.14

In this case, the diameter of the pool is 20ft, then the radius is:

R = 20ft/2 = 10ft

And it must extend 12 inches beyond, then the radius of the cover must be:

R = 10ft + 12in

Now, we know that 1ft = 12 in, then we can rewrite the radius as:

R = 10ft +1ft = 11ft

Then the area of the cover is:

$A = 3.14*(11ft)^2 = 379.94 ft^2$

B) now we want to get the length of the rope, we know that the rope runs along the cover, then the length of the rope must be equal to the circumference of the cover.

Remember that the circumference of a circle of radius R is:

$C = 2*pi*R$

Then the length of the rope will be:

$C = 2*3.14*11ft = 68.2ft$

If you want to learn more about circles:

brainly.com/question/1559324

#SPJ1

7 0

1 year ago

I need help with these problems, thanks

ira [324]

1. C

2. A

3. B

Hope This Helped!

<u><em>(Brainliest will be appreciated)</em></u>

4 0

2 years ago

Read 2 more answers

Help- thanks :/

DerKrebs [107]

Answer:

4,7 is the one not equalivent to the others.

Step-by-step explanation:

All of the y values in the ratios have a gcf of 12. 7 Is not divisible by 12, let alone 9.

3 0

2 years ago

Read 2 more answers

(6.8x10^2) x (1.3x10^-3) answer as standard form

adell [148]

Answer:

0.884

Step-by-step explanation:

You first do the exponents, do the foil, combine like terms and In the end your result will be 0.884.

6 0

3 years ago

Given p (x) = 5x - 6 what is the value of p ( 2/5)Help me please quick!​ please

Given p (x) = 5x - 6 what is the value of p ( 2/5)Help me please quick! please