patriciajmm11 patriciajmm11
  • 09-01-2019
  • Mathematics
contestada

imagine you have taken 4 unit test.Thus far,you have scored a 82%,90%,88%, and x%.You know have a test average of a 78%.What did you scored on that fourth test?

Respuesta :

Ryn00 Ryn00
  • 09-01-2019

Answer:

You scored a 52% on the fourth test.

Step-by-step explanation:

.78=(.82+.90+.88+x)/4

.78=(2.6+x)/4

3.12=2.6+x

.52=x

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