Answer:
D.
Step-by-step explanation:
When a line is perpendicular to another, their slopes will be opposite reciprocal. For example, 1 would be -1, -3 would be , and would be -5. The equation is written in slope-intercept form:
m is the slope, so find the equation with the opposite reciprocal of 3, :
is the only option with the correct slope, so the answer is D.
Answer: 18 4/45
7 2/5 ×2 4/9= 18 4/45
I hope this is good enough:
Answer:
80
Step-by-step explanation:
let w = the width of the rectangles
then
12w = the area of one rectangle
8w = the area of other
:
12w - 8w = 320
4w = 320
w = 320/4
w = 80 units wide
;
:
Check
12 * 80 = 960
8 * 80 = 640
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difference: 320