What does "perfect square" me

Answers

Answer 1

Answer: Perfect square means when two numbers that are the same are multiplied.

For example, 4 is a perfect square because it can be broken down to: 2 x 2

When 2 numbers that are the same are multiplied to form a third number, that number is the perfect square.

Some other perfect squares are: 9, 16, 25, 36, 49, 64, 81, 100

When broken down, it is $3^2, 4^2, 5^2, 6^2, 7^2, 8^2, 9^2, 10^2$ respectively.

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Really confused with this problem. It would be great if someone could help

Answers

(2n+12) + (3n+18) = 180
⇒5n+30=180
⇒5n=150
⇒n=30

x=2n+12
=2(30)+12
=72°

A boat can hold 45 people. 27 more people can fit on the boat. How many people are one the boat now?

Answers

72 people can fit in the biat bc if u Add 45+27 7+5=12 so u will put the 2 in the tens and 4+2+1= 7 so the anwser is 72

A particular shade of paint is made by mixing 5 parts red paint and 7 parts blue paint. To make this shade, Shannon mixed 12 quarts of blue paint with 8 quarts of red paint. Did Shannon mix the correct shade? 20 POINTS!!

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no, she didn't because 5:7 and 12:8 are not equivalent ratios

What is the exact volume of a sphere that has a radius of 7.5ft

Answers

V=(4/3)(pi)r^3

r=7.5

V=(4/3)(pi)(7.5^3)
V=(4/3)(pi)(7.5^3)

V=(4/3)(pi)(421.875)

V=562.5pi ft^2

if you watnt to you can aprox pi=3.14

V=562.5*3.14

V=1766.25 ft^3

so answer is 562.5pi ft^3 or 1766.25 ft^3

since the equation for volume of a sphere is 4/3* π*r^3, you just plug in the radius. if you do this you get 4/3*421.875*π. multiply 4/3 and 421.875 and you get 562.5. now since it says EXACT, leave it in terms of pi; your answer would be 562.5π ft^3. if it said estimated or something along those lines then you would multiply by 3.14...... but since it says exact you leave pi alone.

What’s 6 divided by 3 plus 1,000,000