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

<u>Step-by-step explanation:</u>

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

You might be interested in

Three times the sum of a number and four and five

BabaBlast [244]

Answer:

3x+27

Step-by-step explanation:

3(x+4+5)=

3x+12+15=

3x+27

6 0

3 years ago

Graph the equations to solve the system y=-3x-6. Y=-3x-7

Llana [10]

Answer:

Step-by-step explanation:

D. No solution

This is simply because -3x-6 cannot equal -3x-7 because -6 and -7 are different numbers therefore x is a false statement.

3 0

2 years ago

Read 2 more answers

Use a calculator to solve this problem:<br><br> 28 + 27 × 36

Annette [7]

For this case we have that according to the order of algebraic operations PEMDAS, the multiplications have priority over the addition and subtraction, then, we have the following expression:

$28 + 27 * 36 =\\28 + 972 =\\1000$

Thus, the value of the expression is 1000.

Answer:

$28 + 27 * 36 = 1000$

8 0

3 years ago

Read 2 more answers

A roller coaster has 10 cars. Seven of the cars are green. Write two equivalent fractions for the part of the cars the green.

Nataliya [291]

7/10 and 14/20 are the equivalent fractions that would solve this equation

6 0

3 years ago

Read 2 more answers

Answer all questions and get branlist and 30 points

alukav5142 [94]

Answer:

1. w-6

2. s+6

3. t-6

4. (1/3)p-2

5a. 4m+35

5b. 435 members

Step-by-step explanation:

hope this helped

8 0

3 years ago