Answer:
F = 77
Step-by-step explanation:
Solve for the first variable in one of the equations, then substitute the result into the other equation.
The hypotenuse of the two triangles have the same slope because they are in the same straight line and the slope of a straight line is constatn.
You can prove that in this way:
slope = rise / run = Δy / Δx
For the upper triangle: slope = (4 - 2) / (8 - 4) = 2 / 4 = 1 / 2
For the lower triangle: slope = (-1 - (-5)) / (- 2 - (-10)) = 4 / 8 = 1 / 2
So, this proves that the two slopes are the same: 1 / 2
If 3 out of 24 students are in student organizations, then 21 are not. So the ratio of in and not in is 3:21, or 1:7. ☺☺☺☺
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Answer B
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Answer D.
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Answer D.
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Answer C.
