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mdarter
03.12.2019 •
Mathematics
20 ft
7
ft
28 ft
what is the area of the triangular part of the rug?
a 28 ft2
b. 56 ft2
c. 98 ft?
d. 196 ft2
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Ответ:
-3/7
Step-by-step explanation:
It is asking to find the slope of the secant line going through points (2,f(2)) and (9,f(9)).
We must find f(2) by looking at the curve at x=2. We should see that y=2 there so f(2)=2.
We must find f(9) by looking at the curve at x=9. We should see that y=-1 there so f(9)=-1.
The slope of a line is calculated by finding the ratio of the change of y to the change of x.
(-1-2)/(9-2)
(-3)/(7)
-3/7