10 POINTS & BRAINLIEST!!! PLEASE SHOW PROCESS :)

In a math class there are five equally weighted tests. A student has grades of
94, 92, 78, and 97 on the first four tests. To earn an A in the class, the students
must have an average of at least 90. What must the student get on the fifth test
to earn an A in the math class?

Answer: The student needs at least an 89 on the fifth test to earn an A in the math
class.

Respuesta :

corm

Answer:

Step-by-step explanation:

[tex]Avg = \frac{sum}{total}[/tex]

From the problem statement, the average needs to be [tex]90[/tex], the total number of students is [tex]5[/tex], and the sum is [tex]94 + 92 + 78 + 97 + x[/tex], where [tex]x[/tex] is the grade the final student gets.

[tex]90 = \frac{94 + 92 + 78 + 97 + x}{5}[/tex]

[tex]450 = 94 + 92 + 78 + 97 + x[/tex]

[tex]450 = 361 + x[/tex]

[tex]x = 89[/tex]

ACCESS MORE
EDU ACCESS