Korey5672
30.08.2019 •
Mathematics
Jacks average in math for the first nine weeks was an 88. his second nine weeks averange deceased to 81. what is the is the percent of change from the first nine weeks to the second? label increase or decrease
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Ответ:
Ответ:
12
Step-by-step explanation:
A : B
1 : 3
Since we know that B is 3 times of A and A is 4...
1 unit = 4
3 units = 4 x 3 = 12