9) Gabriel took three math tests last semester. He scored a 91 on the first test, a
1 answer:
The average of anything can be calculated by adding up all the terms and dividing by the number of terms.
In this case,
the number of terms = 3
x = the missing test score.
(91 + 72 + x) / 3 = 80
Let's multiply both sides by 3
91 + 72 + x = 240
Combine like terms.
163 + x = 240
Subtract 163 from both sides
x = 77
Carlos scored a 77 on his third test.
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3.65x19.8=$72.07 hit that thanks button and 5 star rating plz thankyou!!!!
