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AVprozaik [17]
2 years ago
7

Last semester, Zachary earned an average score of 80 points on math tests. So far this semester, his average score is 15% lower.

What is the average of Zachary's scores this semester?
Mathematics
2 answers:
Ghella [55]2 years ago
7 0

Answer:

The answer would be 12

Step-by-step explanation:

15/100 =  X/80

To solve the equation above for X, you first switch the sides to get the X on the left side, then you multiply each side by 80, and then finally divide the numerator by the denominator on the right side to get the answer.

The equation

15/100 = X/80

X/80 = 15/100

X*80/80 = 15*80/100

X = 1200/100

X = 12

Ostrovityanka [42]2 years ago
4 0
Look here no one help if people do too much time waste till help received just use app names guthmath helps with math and use this code P9EJ5H to get answere because believe me u will wait alot the app is free
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