Answer:
-7 C
Step-by-step explanation:
The difference between -5 C and -12 C is -7 C, since -12 - (-5) = -7
Answer:
Step-by-step explanation:
2x²+8=80
2x²=80-8=72
x²=72/2=36
x=±√36
x=±6
so x=6 is one solution other is x=-6
Answer:
1 hour and 42.8 minutes
Step-by-step explanation:
To answer this question let's call 
while it takes Jenna to clean the gutters
Let's call 
while it takes John to clean the gutters
h
h
t = total time
g = job = 1 (clean the gutters)
The speed of each one is:
g/ h
g/h
So:
h
Then, both together paint 
of gutters for each hour.
This means that it takes 
hours to clean the gutters together
Finally cleaning together takes 1,714 hours or also
1 hour and 42.8 minutes
Answer:
30
Step-by-step explanation:
Exterior angle equals sum of opposite interior angles
3x = 2x + 30
3x - 2x = 30
x = 30
Since the chance of getting an even number on every roll is 3/6 or 1/2
We have to multiply 1/2 by 138
The answer is 69.
Hope this is correct, and pls correct me if I'm wrong :)
