Answer:
679.6
Step-by-step explanation:
there are only 2 possible common tangents to circles A and B can exist
ok done. Thank to me :>
The
<u>correct answer</u> is:
Matthew's rate is higher by $50 per month.
Explanation:
We know that Christopher's rate is $550 per month.
To find Matthew's rate, we will treat the data we have as ordered pairs:
(3, 1800)
(6, 3600)
(9, 5400)
We find the slope of the line between these points. The formula for slope is:
Using the first two points, we have:
To verify Matthew saves the same amount each month, we will find the slope between the second two points and make sure they're the same:
Matthew's rate is $600 per month.
This is higher than Christopher's by 600-550=$50 per month.
Answer:
I think the ans is
(3x+7) + (9x+17) = 180(it's a strait line)
3x+9x+7+17=180
12x+24=180
12x=180-24
12x=156
x=156/12
x=13