Fill in the blank ____pi/3 cos pi/6 = 1/2 (sin pi/2 + sin pi/6)
2 answers:
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After 5 tests, her average was 88. To have a seven-test average of 90, the total must be:
Her average after 5 tests was 88. Her total score on the 5 tests is:
Subtract:
Find the average by dividing by 2:
Her average must be 95