Answer:
1)commutative property of addition
2)commutative property of addition
3)B
Answer:
no
Step-by-step explanation:
they over lap
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.
100% = 50
1% = 50/100 = 0.5
52% = 0.5 x 52 = 26
There are 26 green jelly beans in the jar:)