Answer:
A. 89.84
Step-by-step explanation:
Weighed mean:
Sum of the multiplications of each value by its weight, divided by the sum of the weights.
Weights:
15 had an average of 90.
7 averaged 85.
10 averaged 93.
What is the weighted mean for the 32 students taking the exam?
Thus the correct answer is given by option A.
Answer:
a. 540
Step-by-step explanation:
Answer:
177 dollars
Step-by-step explanation:
the total price Jacob is determined by using this, 55(3)+x=y
We know that 55 times three is 165, so we add this to 12 dollars for the used gae and get the answer
3x*5x*8x=960
x^3=960/120
x= cubrt(8)=2
sides then are 6;10;16
hope this helps