Answer:
21 C
22 B
23 169
Step-by-step explanation:
21 3m mean 3 times a certain number
22 the negative make the 4 go negative and the -5 positive
23 i did 5^2-4^2= 9
then 6^2 divided by 9+9= 13 i took the 9 from the 5^2 problem then divided it by 6^2
then 13 x 13 = 169
<span>The
power of the root of the power of a variable can be written as a
rational power by creating a rational exponent that is the product of
the powers divided by the root. The rational exponent should be reduced
to lowest terms. For example, the seventh power of the sixth root of the
fifth power of x will be x^(7*5/6) = x^(35/6).
hope it helps
</span>
Answer:
3 * (x + 7)
Step-by-step explanation:
Mark number as x
Then the sum of a number and seven is x + 7
Three times x + 7 can be written as
3 * (x + 7)
Parentheses mean that we first add x and 7 and then multiply their sum by 3
Alternatively you can write it as 3x + 21, since
3 * (x + 7) = 3 * x + 3 * 7 = 3x + 21
Answer:
true
Step-by-step explanation:
its just backwards
