X^2+6x+3=y
x^2+6x+9=-3+9
(x+3)^2=6
(-6/2)=-3
(-3)^2+6(-3)+9=6
9-18+9=6
y=-6
Answer:
a. x = 4 b. x = 7
Step-by-step explanation:
a. They are both congruent right angles because of the alternate exterior angles theorem
90-4 = 86
86/21 = 4
b. The angles are congruent because of the corresponding angles postulate
75+2 = 77
77/11 = 7
The answer is 22220. just add all the numbers together
All you need is the definition of conditional probability:

So


and the answer would be B.