Answer:
D
Step-by-step explanation:
<em>The statements are shown below:</em>
<em>A) She used the wrong number as a repeated factor and should have evaluated -2x2x2x2x2x2x2x2.
</em>
<em>B) She used the wrong number as a repeated factor and should have evaluated -(8x8).
</em>
<em>C) She misinterpreted the exponential form and should have multiplied -2 and 8.
</em>
<em>D) She made a sign error when multiplying and should have had 256 as a final answer.</em>
<em />
<u>Solution:</u>
<u />
The problem to simplify is:

Haley's steps are shown below:

Generally,
is actually "a" multiplied "b" times.
So, Haley wrote "-2" eight times multiplied together. That is okay.
Now,
We are dealing with negative numbers.
- When negative numbers are multiplied "odd" number of times, the answer is negative.
- When negative numbers are multiplied "even" number of times, the answer is positive.
Haley wrote "-2" eight times, which is EVEN number of times, so the answer would be POSITIVE. But, Haley's answer is negative. Which is wrong. But "256" is right.
Haley's error is:
Answer choice D
Answer:
9
Explanation:
9 root 2 = root 81 x root 2 = root 162
Root 162 = 12.7279220614
9^2 + b^2 = 12.7279220614^2
81 + b^2 = 162
b^2 = 81
Root both
B = 9
W-13=15 add 13 on both sides to isolate variable and you get w=13+15, w=28
Answer:
18
Step-by-step explanation:
-3 + 80 ÷ 8 -5 · (-1) ⇒ -3 + 10 + 5 ⇒ 18
The bags of candy that was sold is 6
The bags of cookies that was sold is 10.
<h3>What are the linear equations that represent the question?</h3>
$8.50c + $4.50o = 79 equation 1
o - c = 6
o = 6 + c equation 2
Where:
<h3>How many bags of candy and cookies were sold?</h3>
Substitute for o in equation 1 using equation 2
$8.50c + $4.50(6 + c) = 79
$8.50c + 27 + 4.50c = 79
$8.50c + 4.50c = 79 - 27
$13c = 52
c = 52 / 13
c = 4
Substitute for c in equation 2
0 = 6 + 4 = 10
To learn more about linear functions, please check: brainly.com/question/26434260
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