Answer:
87.5 cm squared
Step-by-step explanation:
Equation: 1/2h(b1+b2)^2. Add the two bases to get fifteen, multiply that by the height, 7, to get 175, divide that by 2(or multiply it by 1/2)
Since all the options are in the slope intercept form, we find the equation using the formula,

We can find m, the slope using the formula,



On substitution,

We use any of the points, say (-2,-3) to determine the value of c.


The equation is therefore,

The correct answer is D.
(3×1/2) + (6×3/4) + (3×1) + 1 1/4 +1 1/2=11.75
9514 1404 393
Answer:
(0, 9)
Step-by-step explanation:
The midpoint coordinates are the averages of the end point coordinates.
M = (A +B)/2
M = ((8, 10) +(-8, 8))/2 = (8 -8, 10+8)/2 = (0, 18)/2
M = (0, 9)
The midpoint is (0, 9).