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igomit [66]
3 years ago
10

In order to take honors-level math, Lisa must have an average of 85 on her math tests. Her scores so far are 85, 70, and 98. Wha

t is the
minimum score Lisa needs on the fourth test to get into honors math dass?
A 80
B 84
C. 85
D. 87
Mathematics
1 answer:
Mila [183]3 years ago
5 0

Answer:

d) 87

Step-by-step explanation:

to solve this lets set up the equation

\frac{85+70+98+x}{4} =85\\\frac{253+x}{4} =85

then we multiply 4 on both sides

253+x=340

and subtract 253 on both sides

x=87

to double check take the averages

(87+85+70+98)/4=85

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Answer:

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