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  • 12-08-2018
  • Geography
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Brian's scores on his first four spanish test are 92, 85, 90, and 92. What test score must Brian earn on the fifth test so that the mean will be exactly 90?

Respuesta :

Ava45018 Ava45018
  • 12-08-2018
(92+85+90+92+x)/5 = 90
x=91
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