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3 years ago

Write an equation that shows the relationship 64% of y is 40. PLEASE HELP

Mathematics

2 answers:

DerKrebs [107]3 years ago

7 0

Answer:

64/100=40/y

Step-by-step explanation:

We use the simple equation of finding percentages, which would be the percentage (64) over 100 percent, as this is our total. If 64 percent of y equals 40, then the equation is 64/100=40/y. To solve for y, multiply 100 x 40= 4000, then divide by 64 to get the answer. Y=62.5

White raven [17]3 years ago

4 0

Answer:

$0.64*y = 40$

Step-by-step explanation:

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Find the sum of all the prime numbers between 20 and 40.

Helga [31]

Answer:

120

Step-by-step explanation:

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3 years ago

Prove that (a-b) x (a+b)=2a x b is true. (a and b are vectors)

Anon25 [30]

(a-b) X (a+b)
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Now, cross product of a vector with itself = 0
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3 years ago

Read 2 more answers

What is the surface area of the rectangular prism below?

seropon [69]

Answer:

Step-by-step explanation:

multiply 9 by 12 to get the surface area of the end of the rectangle.

you should get 108.

multiply 12 by 9 to get the surface area of the side.

you should get 135.

multiply 12 by 15 to get the surface area of the bottom.

you should get 180.

then add all your answers and multiply by 2 this will give you the total surface area and you will find that the answer is A.

3 0

3 years ago

A circular merry-go-round has a radius of 5 feet. Find the distance of a spin of one full rotation. Use 3.14 for pi and round th

Sedbober [7]

Option C

The distance of a spin of one full rotation is 31.4 feet

Solution:

Given that,

A circular merry-go-round has a radius of 5 feet

Radius = 5 feet

We have to find the distance of spin for one full rotation

Distance covered in 1 full of rotation is equal to circumference of circle

The circumference of circle is given as:

$C = 2 \pi r$

Where "r" is the radius

$C = 2 \times 3.14 \times 5\\\\C = 6.28 \times 5\\\\C = 31.4$

Thus the distance of a spin of one full rotation is 31.4 feet

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PLEASE HELP mE: Expand the expression 0.9(7x - 1) + 9?

Alex_Xolod [135]

Answer:

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Step-by-step explanation:

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3 years ago