Answer:
The answer would be a 70
Step-by-step explanation:
If her scores on the first four exams are 71, 69, 85, and 83, what score does she need on the fifth exam for her overall mean to be. a. at least 70
Answer:
Step-by-step explanation:
no answer solve it your self
(3s + 270) / 6 <u>></u> 90
s = 90; lowest average score
95+86+89 = 270
(3s + 270) / 6 <u>></u> 90
<u> * 6 * 6</u>
3s + 270 <u>></u> 540
<u> - 270 -270</u>
3s <u>></u> 270
<u>÷3 ÷3</u>
s <u>></u> 90
To check:
(3s + 270)/6 <u>></u> 90
(3(90) + 270)/6 <u>></u> 90
(270 + 270)/6 <u>></u> 90
540 / 6 <u>></u> 90
90 <u>></u> 90
Answer:
I'm pretty sure it's the to right one
Step-by-step explanation:
