Answer:
10.00 +4s .
u wanted expression , not answer.?
Step-by-step explanation:
I have attached how to work through this problem. I hope this helps
D^2-7d-18
d -9
d +2
(d-9)(d+2)
d-9=0 d=9
d+2=0 d=-2
XZ = 186.8625.
Since the triangles are similar, the ratio of their angles is the same. This means the ratio of BC to YZ will be the same as the ratio of AC to XZ; using this to set up a proportion,
9.6/118.8 = 15.1/x
Cross multiply:
9.6*x = 118.8(15.1)
9.6x = 1793.88
Divide both sides by 9.6:
9.6x/9.6 = 1793.88/9.6
x = 186.8625
Look at the picture.
ΔZYX and ΔDYC are similar. Therefore the lengths of sides are in proportion:
DC = x
ZX = 16
DY = a
ZY = a + a = 2a
Substitute:
<em>multiply both sides by 16</em>
<h3>Answer: CD = 8</h3>
