Hello,( 550 m² × 2 ) ÷ ( 35 m + 15 m ) → 1 100 m² ÷ 50 m → 22 mBye :)
Answer: Easy 17 25/48
Answer:
C
Step-by-step explanation:
subtract
100
She wants to average 85, so adding ALL three of her scores, divided by 3 needs to equal 85.
(75 + 80 + x)/3 = 85
Times by 3.
75 + 80 + x = 255
155 + x = 255
subtract 155.
x = 100
She needs 100 on the third test.
