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yaroslaw [1]
3 years ago
6

(TEST TOMORROW) Rewrite the expression using a positive exponent.

Mathematics
1 answer:
Zielflug [23.3K]3 years ago
5 0

Answer:

\frac{1}{8 {}^{7} }

Step-by-step explanation:

{a}^{  - n}  =  \frac{1}{ {a}^{n} }

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3 years ago
uppose germination periods, in days, for grass seed are normally distributed and have a known population standard deviation of 2
natka813 [3]

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Step-by-step explanation:

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3 years ago
The value of 4x^2-5 when x=3
Veseljchak [2.6K]

Answer:

31

Step-by-step explanation:

Plug in 3 for x in the expression:

4(3²) - 5

Note that there are no parenthesis (other than the one I added, to make it easier for you. Follow the order of operations, PEMDAS. PEMDAS = Parenthesis, Exponents (& Roots), Multiplication, Division, Addition, Subtraction, and the left -> right rule.

First, solve the exponent:

4(3²) - 5 = 4(3 * 3) - 5 = 4(9) - 5

Next, solve the multiplication:

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Finally, subtract:

36 - 5 = 31

31 is your answer.

~

7 0
3 years ago
Read 2 more answers
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