9514 1404 393
Answer:
(c) π/2
Step-by-step explanation:
We know the sine of an angle is the cosine of its complement, and vice versa. The complement of angle x is (π/2-x), so ...
sin(π/2 -x) = cos(x)
This is shown by the attached graph.
Total number of chips: 2 + 4 +3 = 9
total white chips = 3
probability of picking white first = 3/9 = 1/3
after taking one chip there would be 9-1 = 8 chips left
and 3-1 2 white chips left
probability of picking 2nd white chip = 2/8 = 1/4
probability of picking both = 1/3 x 1/4 = 1/12
answer is D
Answer:
The full answer is in the media.Good luck!
Answer:
The answer is x=4 or x=−10
Solutions:
(x + 3)² = 49
(x+3)(x+3)=49
x²+6x+9=49
x²+6x+9-49=0
(x-4)(x+10)
x-4=0 x+10=0
x=4 x=-10