Answer:
0.0475
Step-by-step explanation:
First find the z-score.
z = (x − μ) / σ
z = (125 − 100) / 15
z = 1.67
Use a calculator or chart to find the probability. Using a chart:
P(Z > 1.67) = 1 − P(Z < 1.67)
P(Z > 1.67) = 1 − 0.9525
P(Z > 1.67) = 0.0475
Answer:
516 students preferred pizza
Step-by-step explanation:
To solve this problem we have to calculate 60% of the total students (860)
To get the percentage of a number we have to divide by 100 and then multiply by the number it indicates, in this case 60
860 %60 = 860 / 100 * 60
860 / 100 * 60 =
8.6 * 60 = 516
60% of 860 is 516
this means that for Friday lunches 516 students preferred pizza
Do you need to solve for x?
As the both equal y, they must both equal each other so
-2x+7=5x-7
Add 2x to both sides
7=7x-7
Add 7 to both sides
14=7x
Divide both sides by 7
2=x
X=2
No, a degree in C is much larger than a degree in F, so since the two are used in this question, it is imposable to know if the temperature raised at all between the time of 2 pm and 6pm
9 is the square root of 81
final answer: 9
