27 minuets
3/5 of 45 = 27
4/5 of a minuet = 48
18 X 1.48 = 26.64
ROUND = 27
test grades: 75, 82, 88, 70
Average = Total sum of all numbers/number of item in the set
Total sum of all numbers = 75 + 82+ 88 + 70 = 315
number of item in the set = 4
Average = 315/4 = 78.75
S^3=216yd^3 so then s=6 yd
(74 + 78 + 70 + x) / 4 = 80
Divide each number by 4.
18.5 + 19.5 + 17.5 + x = 80
Add the numbers you know so far.
18.5 + 19.5 + 17.5 = 55.5
You need 24.5.
Now, since we divided all the others by 4, we have to multiply 24.5 by 4 to see what the exam score would be.
24.5 * 4 = 98.
To get an average of 80%, the student would need to get a 98 on their fourth exam.
Answer:
6
Step-by-step explanation:
45/7.5=6