Answer:
1st one
Step-by-step explanation:
I have answered ur question
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.
Answer:
-29/11
Step-by-step explanation:
for a question like this, replace all x in the question with -7
hope i helped
All of them are equal to 6 grams except for 60 kilograms (60 kg)
Answer:
112degrees
Step-by-step explanation:
Alternate angles form a 'Z' shape and are sometimes called 'Z angles'. a and b are adjacent angles. Adjacent angles add up to 180 degrees. ... These add up to 180 degrees (e and c are also interior).