Answer:
A
Step-by-step explanation:
just watch and go with the flow
Hello from MrBillDoesMath!
Answer:
Choice C [16,100]
Discussion:
Let "x" be the score needed on the 5th exam to achieve an average score >= 60. Then
(50 + 90 + 66 + 78 + x)/5 >= 60 => (multiply both sides by 5)
(50 + 90 +66 + 78) + x >= 60*5 = 300 =>
(284) + x >= 300 =>
x >= 300 - 284 = 16.
As x is a percent, x <= 100, so the interval is [16, 100], which is Choice C.
Thank you,
MrB
Addition, distributive, and multiplication property
Answer:
and 
Step-by-step explanation:
we have
we know that
Compound inequality can be divided into two inequalities
so
rewrite
and
therefore
An equivalent form of the compound inequality is
and
Answer:
9
Step-by-step explanation:
2x+3=3x-6
3+6=3x-2x
9=x
