D. $1.80
You divide $1.20 by 18 to get the amount per piece which is about $0.067. Then you multiply 0.067 by 27 for the amount for 27 pieces which is about $1.81 rounded to $1.80.
2)
x^2 - 14x - 32 = x^2 - 16x + 2x - 32 = x(x-16) + 2(x-16) = (x - 16)(x + 2)
<h2>
⇒ x^2 - 14x - 32 = (x - 16)(x + 2)</h2>
---------
3)
2n^2 - 7n - 15 =
= 2n^2 - 10n + 3n - 15 =
= 2n(n - 5) + 3(n - 5) =
= (n - 5)(2n + 3)
<h2>
⇒ 2n^2 - 7n - 15 = (n - 5)(2n + 3)</h2>
---------
4)
<h2>
x^2 - 25 = (x - 5)(x + 5)</h2>
Answer:
1440 feet
Step-by-step explanation:
15 × 12 × 8 = 1440
Remember if something is likely to happen, then it is NOT significant because it should have happened. It is significant if it is not likely to have happened but did. Think about if I see a car drive down the road, that is not significant because that is normal. However, if I see an elephant going down the road, that is significant since it should not happen.
In this case, the original difference of means of 4 is likely so this would not be significant.
