27 yards
perimeter= l+l+w+w
9.5+9.5+4+4=27
Solving for y, we can start by expanding to get y-3=5x-20. Next, we can add 3 to both sides (to separate y), resulting in y=5x-17. To find the slope in the equation y=mx+b, you simply find what you multiply x by, which is 5 in this case. To find a perpendicular slope, you start by making the slope (5 in this case) negative. Next, we find the reciprocal of the number. Since -5 can be written as -5/1, the reciprocal and therefore perpendicular slope is -1/5
Answer:
B.
Step-by-step explanation:
3 x 7 = 21, so it is B. You can't multiply 3 by anything to get the other numbers.
If x=15 then x=30 if y=6 then y=12