Marie scored 95,86 and 89 on three science tests she wants her average score for 6 test to be at least 90 what inequality can you write to find the average scores that she can get on her next three test to meet this goal? Use s to represent the lowest average score

Question

Mathematics

Haylie Donaldson

15 September, 15:51

Marie scored 95,86 and 89 on three science tests she wants her average score for 6 test to be at least 90 what inequality can you write to find the average scores that she can get on her next three test to meet this goal? Use s to represent the lowest average score

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Answers (1)

Know the Answer?

Isabela Ashley · Answer 1

(3s + 270) / 6 > 90

s = 90; lowest average score

95+86+89 = 270

(3s + 270) / 6 > 90

* 6 * 6

3s + 270 > 540

- 270 - 270

3s > 270

:3 : 3

s > 90

To check:

(3s + 270) / 6 > 90

(3 (90) + 270) / 6 > 90

(270 + 270) / 6 > 90

540 / 6 > 90

90 > 90