Answer:
c. 24 ft
Step-by-step explanation:
if the 12 inch ruler casts a 6 inch shadow (shadow has half size) then a tree with 12 feet long shadow will have a height of 24 feet
Answer:
well, we only no that
2l + 2w is 80
(lengths and widths on all 4 sides
and that w * l is A
so the function should be w times what's left for l, but also expressed by something with w
2l + 2w = 80 | -2w
2l = 80 -2w | devide by 2
l = 80 - w
now we can substitute l in
A = w * l
so that we only need w's
A(w) = w * (80-w)
for any w it will give us the area, makes only sense for 0<w<80
Answer: Multiplying 3x and -x we obtain A= -3x^2
let y = x^2
4y^2 -21y + 20 = 0
solve for y
then substitute back in to get x
Answer:
72 inches
Step-by-step explanation:
12 × 6 = 72
Answer: There are 72 inches in 6 feet
