Question

Can someone help me with number 21. Please show steps

Answer 1

Answer:

39

Step-by-step explanation:

You need to solve the exponents first

3[64÷(25 -9)+9]

Then you can do the parenthesis

3[64÷ 16 +9]

Then divide 64 by 16 which equals 4

3[4+9]

Then you do the brackets

3 x 13

Which equals 39

Answer 2

Answer:

39

Step-by-step explanation:

Use PEMDAS.

Starting equation:

$3[8^{2}/(5^{2}-3^{2} )+9]$

Start with evaluating the Exponents inside the innermost Parentheses:

$3[8^{2} /(25-9)+9]$

Evaluate the Subtraction inside the innermost Parentheses:

$3[8^{2} /(16)+9]$

Now that we have solved the first set of Parentheses, we need to solve the second, starting with the Exponents:

$3[64/16+9]$

Next, we need to evaluate the Division inside the Parentheses:

$3[4+9]$

After that, evaluate the Addition inside the Parentheses:

$3[13]$

Finally, evaluate the Multiplication:

$3[13]=39$

The answer is 39.