D. X=3cm
Since the triangles are similar, just set up a proportion to solve for x.
4/8=x/6. Then just cross multiply and solve from there.
Substitute -3 to x
(-3)^2 + 4(-3) + 1
9 - 12 + 1
= -2
276 is the answer because 460 times .6 = 276
Answer: 978 in^2
Explanation:
30 x 24 = 720
12 x 9 = 108
(15 x 20)/2 = 150
150 + 108 + 720 = 978
