Answer:
Mean, m = 72
Step-by-step explanation:
It is given that, Carl earned grades of 62, 78, 59, and 89 on four math tests.
It is required to find the mean of his grades.
Mean of a data is given by :

Sum of observations is 62 + 78 + 59 + 89 = 288
Total no of observations are 4
So, mean of his grades is :

So, the mean of his grades is 72.
Answer:
14.167
Step-by-step explanation:
assuming you meant 5+13
The answer is 14 because a negative number multiplied by another negative number is positive. So (-7)*(-2) is 14.
Answer:
x=10^{\frac{2}{3}}-5
Step-by-step explanation: