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3 years ago

Find the prime factorization of the number 20. If the number is prime, state this

Mathematics

1 answer:

mihalych1998 [28]3 years ago

3 0

Answer:

Some of the prime factors are 1,2,4,5,10,20,-1,-.2,-4,-5,-10,-20, and since 5 is prime you can just start with 5 and 4

Step-by-step explanation:

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What is the square root of -1?

asambeis [7]

Answer:

The answer would be 1, whenever you square a negative number you should just input it as positive. The answer would be the same.

Step-by-step explanation:

4 0

3 years ago

What is t+8=15 write how u found out show ur work thanx plz hellppppp

Pachacha [2.7K]

The answer is the number that 't' must be in order for the equation
to be a true statement.

Here's how to find it:

Write t + 8 = 15

Then subtract 8 from each side: <em> t = 7</em>

8 0

3 years ago

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What is the solution of |3x+9|≤15<br><br> answer choices v

e-lub [12.9K]

Answer:

-8<x<2

Step-by-step explanation:

5 0

3 years ago

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3√75<br> simplest rationalizing factor <br> PLEASE DO ANSWER ONLY IF YOU KNOW IT

rjkz [21]

Answer:

the square root of 75 is 8.6

and 8.6 times 3 is

the answer is 25.8

Hope This Helps!!!

4 0

3 years ago

Please help with this question!! I need serious help!!

asambeis [7]

Answer:

<h2>The circumference is multipled by 4.</h2>

Step-by-step explanation:

The formula of an area of a circle"

$A=\pi r^2$

The formula of a circumference of a circle:

$C=2\pi r$

The area multipled by 16:

$16A=16\pi r^2\\\\16A=\pi(4^2r^2)\\\\16A=\pi(4r)^2$

The radius has increased fourfold, therefore:

$C'=2\pi(4r)=4(2\pi r)=4C$

The circumference is multipled by 4.

You can calculate the area and check the circumference:

$r=11.6\ in\\\\A=\pi(11.6)^2=132.56\pi\\\\16A=(16)(134.56\pi)=2152.96\pi\ in^2$

Calculate the radius:

$\pi r^2=2152.96\pi$ <em>divide both sides by π</em>

$r^2=2152.96\to r=\sqrt{2152.96}\\\\r=46.4\ in$

Calculate the circumference of both circles:

$r=11.6\ in\\\\C=2\pi(11.6)=23.2\pi\ in$

$r=46.4\ in\\\\C'=2\pi(46.4)=92.8\pi\ in$

$\dfrac{C'}{C}=\dfrac{92.8\pi}{23.2\pi}=4\to C'=4C$

5 0

3 years ago