Answer:
Step-by-step explanation:
The quantity x + 7 is squared.
Expand the brackets and simplify the expression.
We can leave the expression in factored form.
In rectangle PQRS, PR = 18 x - 24 and QS = x + 146, find the value of x and the length of
1 answer:
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Answer:
Grace should use her phone for 58 minutes to maintain an average of 55 minutes.
Step-by-step explanation:
Usage of first month = 43 minutes
Second month = 62 minutes
Third Minutes = 57 minutes
Let, the usage of fourth month = k minutes
Mean of the data = 5 minutes
Now, Average of a Data =
⇒
or, 55 x 4 = 162 + k
⇒ 220 - 162 = k
or, k = 58 minutes
So, Grace should use her phone for 58 minutes to maintain an average of 55 minutes.