3 years ago

The square root of the sum of a number is 4 is 5. Find the number. What is it?

Mathematics

1 answer:

anzhelika [568]3 years ago

7 0

Answer: 21

Step-by-step explanation:

$\sqrt{n+4}=5\\\\(\sqrt{n+4})^2=(5)^2\\\\n+4=25\\.\underline{\ \ -4\ \ -4}\\\boxed{n\quad \ =\ 21}$

You might be interested in

;HELP ME PLEASE)During Christmas break, Mason's parents allowed him to play video games for 24 total

IRINA_888 [86]

1/3 or 0.333...

Step-by-step explanation:

Well 8 times 3 = 24 so it would be 1/3 of 24 of 0.333...

5 0

3 years ago

Read 2 more answers

While playing a video game Ruth earned 5 base points,b, 9 bonus points,x, and 4 advanced points, a. Write an algebraic expressio

Musya8 [376]

b + x + a

Hope it helps you.

7 0

3 years ago

To divide 572 divide 4, Stanley estimated to place the first digit of the quotient. In which place is the first digit of the quo

andreyandreev [35.5K]

It would go over the five, so im guessing the hundreds

6 0

3 years ago

What does not represent the quotient of 17 divided by 10?

amm1812

17-10= j i really don't know i just guessed

7 0

3 years ago

<img src="https://tex.z-dn.net/?f=%28a%29%20%7B%20-%20%28b%29%7D%5E%7B2%7D%20" id="TexFormula1" title="(a) { - (b)}^{2} " alt="(

Cloud [144]

Answer:

a - b2

Step-by-step explanation:

STEP 1 :

Trying to factor as a Difference of Squares:

1.1 Factoring: a-b2

Theory : A difference of two perfect squares, A2 - B2 can be factored into (A+B) • (A-B)

Proof : (A+B) • (A-B) =

A2 - AB + BA - B2 =

A2 - AB + AB - B2 =

A2 - B2

Note : AB = BA is the commutative property of multiplication.

Note : - AB + AB equals zero and is therefore eliminated from the expression.

Check : a1 is not a square !!

Ruling : Binomial can not be factored as the difference of two perfect squares

Final result :

a - b2

HOPE THIS HELPS!

PLEASE MARK BRAINLIEST! :)

7 0

3 years ago