Here is how i got my answer.
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30 hours. Multiply $8.10 by 40 to get $324. Divide $324 by $10.80 to get 30 hours.
Here, we are required to find how many hours per week does Lindsey need to study if she wants to have an average of at least 90
Lindsey needs to study for at least 15.25 hours to have an average of 90
Given expression:
4(h + 11) – 15
Where,
h = number of hours
For Lindsay to have at least 90
4(h + 11) – 15 = 90
open parenthesis
4h + 44 - 15 = 90
4h + 29 = 90
4h = 90 - 29
4h = 61
Divide both sides by 4
h = 61/4
h = 15.25 hours
Therefore,
Lindsey needs to study for at least 15.25 hours to have an average of 90
Read more:
brainly.com/question/13158712
Answer:
8
Step-by-step explanation:
[-2][-2]=-2 x-2=4
4+4=8
Answer:
768 cubic feet
Step-by-step explanation:
16 * 24 = 384
384 * 3 for the depth of the first pool = 1152
384*5 for depth of second pool = 1920
1920-1152 = 768
