joybrewer4285 joybrewer4285
  • 13-08-2017
  • Mathematics
contestada

To get an a in a course, you need an average of 90% or better on four tests that are worth 100 points each. your scores on the first three tests were 87, 92, 84. what must you score on the fourth test to get an a for the course?

Respuesta :

lina0513 lina0513
  • 19-08-2017

set the score of the fourth test as x

(87+92+84+x)=4*90

x=97


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