Answer:
Step-by-step explanation:
Let x represent temperature on 4th day.
We have been given that the temperatures was recorded for the first three days were -2°,10°,and 7°.
The total temperature on f days would be 
.
We have been given that total temperature change was -4°. We can represent this information in an equation as:
Therefore, the temperature on 4th day must be equal to .
The answer is C I took the test
Get a common denominator first.
89/120 becomes 1157/1560
90/130 becomes 1080/1560
Subtract the two and you get 77/1560
I don't know if this is correct..
warning: I may be wrong
so you have to do a proportion..
it's easy!
x1/y1 = x2/y2
so, plug in the values!
12/8 = x/12
now solve for x.
cross multiply:
8x = 144
divide by 8:
x = 18
there!
Answer:
Point A
Step-by-step explanation:
