Answer:
76%
Step-by-step explanation:
Let f represent the score on the final. Then Inara wants the final grade to be ...
0.25·74 +0.20·99 +0.55·x ≥ 80
38.3 +0.55x ≥ 80
0.55x ≥ 41.7
x ≥ 41.7/0.55 ≈ 75.82
Inara needs a final exam grade of 76% or better to earn at least 80% in the course.
i think it's 118 i don't know because I studied this 4 years ago
Answer:
V≈3.82×10-7m³
Step-by-step explanation:
L= 4*B+42
L= the load
B is the weight of each brick
42 is the weight of the carrier
If you would like to know how many hours will Lena need to work before she can afford to buy the computer, you can calculate this using the following steps:
$900 - $473 = $427
$427 / $7 = 61 hours of yard work
Result: Lena will need to work 61 hours before she can afford to buy the computer.
