Answer:
D
Step-by-step explanation:
is the angle on the right, so
That is D
From quadratic formula:
Q=1+168=169
X1,2=1±13/28=>
X1=14/28=1/2
X2=12/28=3/7
(X-X1) (X-X2) =0=>
(X-1/2)(X-3/7)=0
-2x-10
just distribute the -2 :)
.049774
12/52 x 11/51 = .04977376
40,000/100=400