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kati45 [8]
3 years ago
7

What is -a^-2 if a=-5

Mathematics
2 answers:
jok3333 [9.3K]3 years ago
7 0

Hi!

<h3>If a = -5, <u>-a = 5</u></h3>

So our equation is...

<u>5^{-2}</u>

<h3>When you use a negative exponents, it tells you how many times to <em>divide </em>by the number. </h3>

<em><u>1 ÷ 5 ÷ 5 = 0.04</u></em>

<h2>The answer is 0.04</h2>

Hope this helps! :)

-Peredhel

Lisa [10]3 years ago
6 0

-a^-2 if a=-5

= - 1/a^2

= - (1 / (-5))^2

= - 1/25

= - 0.04

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Answer:

Since Darcie wants to crochet a minimum of 3 blankets and she crochets at a rate of 1/5 blanket per day, we can determine how many days she will need to crochet a minimum of 3 blankets following the next steps:

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So, she can crochet 1 blanket every 5 days.

- Finding the number of days needed to crochet three (3) blankets:

If she needs 5 days to crochet 1 blanket, to crochet 3 blankets she will need 15 days because:

\begin{gathered}DaysNeeded=\frac{NumberOfBlankets}{Rate}\\\\DaysNeeded=\frac{3}{\frac{1}{5}}=3*5=15\end{gathered}

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If she has 60 days to crochet a minimum of 3 blankets but she can complete it in 15 days, she can skip crocheting 45 days because:

AvailableDays=60-RequiredDaysAvailableDays=60−RequiredDays

AvailableDays=60-15=45DaysAvailableDays=60−15=45Days

So, the inequality will be:

s\leq 45s≤45

The inequality means that she can skip crocheting a maximum of 45 days since she needs 15 days to crochet a minimum of 3 blankets.

Have a nice day!

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