The answer is 9! 15-12=3 and 3x18 is 54 and 54/6 is 9.
Answer:
60
Step-by-step explanation:
Answer:
Option (b) is correct.
The sum of given expression
is 
Step-by-step explanation:
Given:Expression 
We have to find the sum of the given expression and choose the correct from the given options.
Consider the given expression
.
can be written as 
Also,
can be written as 
Now, the given expression becomes,

.
Now, adding like term, terms having same variable with same degree.
.
Thus, The sum of given expression
is 
Hello!!!!
If they drive an average of 60 miles per hour the last day it will take them 2.5 hours.
4 hours at 60 miles per hour = 4*60 = 240 miles6 hours at 65 miles per hour = 6*65 = 390 miles
This is a total of 630 miles. There are 780-630=150 miles left; if they average 60 miles per hour, that would be 150/60 = 2.5 hours.
Hope this helps!