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.
Step-by-step explanation:
see the attachment...............
326 because 228-130=98 and 98+228=326 hope this helped
Answer:
last option
Step-by-step explanation:
Sin A: opp/hyp (opposite/hypotenuse)
opposite of A is 24 and the hypotenuse is 30
write that as a fraction: 24/30
simplify and it is: 4/5
Cos A: adj/hyp (adjacent/hypotenuse)
adjacent side of A is 18 and the hypotenuse if 30
write that as a fraction: 18/30
simplify and it is: 3/5
How many friends with her
