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Mathematics 20 Online
OpenStudy (anonymous):

Brenda’s scores on the first three of four 100-point science tests were 95, 92, and 89. What score does she need on her fourth science test to ensure an average score of at least 93? please help me

OpenStudy (anonymous):

92

Vocaloid (vocaloid):

mean = (sum of scores)/(number of tests) 93 = (95+92+89+x)/4 solve for x

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