Answer:7.5
Step-by-step explanation:
Answer:
1. {5,-9}
2.{4}
3.{9/2}
Step-by-step explanation:
The equation
can be solved as follows:




Then, the solutions of the equation are
.
Now, if
, we can solve the equation
as follows:




So, the unique solution of this last equation is 
The last equation is
, where
. To solve this equation we can proceed as follows:







But, x=11/4 is not a solution of this equation. So the unique solution is x=9/2.
If you drive for 3 hours at 60 mph you will have gone 180 miles.
If you drive for 2 hours at 70 mph you will have gone 140 miles.
If we add 180 + 140 = 320.
So you traveled 320 miles. 320 is the answer.
Answer:
x
=
2
y
−
36
p
Step-by-step explanation:
$32, because if you multiply 71.6 with $0.45, you get $32.22. If you round 32.22, you get 32