Answer:
74.4cm
Step-by-step explanation:
Perimeter is L + L + W + W
or 2L +2W
so 2(18.7) + 2(18.5) = 74.4 cm
Answer:
(7/2 , 1/2)
Step-by-step explanation:
(5,-8)=(x1,y1)
(2,9)=(x2,y2)
now,
midpoint(x,y)= x1+x2/2 y1+y2/2
5+2/2 -8+9/2
7/2 1/2
therefore the midpoint of these points is(7/2 , 1/2)
Answer:
slope is -6/8, y-int is 3, x-int is 4, this is found by setting the other variable to 0 and dividing -6 by 8 when you subtract 6x from the left side
Step-by-step explanation:
The answer is y=-x+3
Therefore the slope is -1
The y intercept is 3
From the text you can derive the following equations:
(1) A = bh/2 = 8
(2) and h = b+6
Fill in h in (1):
b(b+6)/2 = 8 => b^2 + 6b = 16 with the quadratic formula or simply trying some values for b you can find b=2, so h=8.