A student has gotten the following grades on his tests: 87, 95, 86, and 88. He needs to have an average of 90 to receive an A fo

Question

3 years ago

11

A student has gotten the following grades on his tests: 87, 95, 86, and 88. He needs to have an average of 90 to receive an A fo

r the class. What is the minimum grade he must get on the last test in order to have an average of 90?
(Measures of Central Tendency and Dispersion)

Mathematics

1 answer:

PilotLPTM [1.2K] · Answer 1 · 2022-03-06T21:27:01+03:00

PilotLPTM [1.2K]3 years ago

8 0

The student needs an average of 90 and he has the following grades :
87,95,86,88
in order to get a 90 average he has to get
90x5=450
87+95+86+88+?=450, 356+?=450 , 450-356=94
the answer is 94