We will be using the fact that , where is the probability that the first bulb works and is the probability that the second bulb works.
The probability that the first bulb works is . However, when we take one out (given that the first bulb works) we now have 19 working bulbs and 4 bad ones. This means that the probability that the second bulb works is .
Now, we can find our final probability:
Answer:
A. No
Step-by-step explanation:
y = 2x + 4
(5) = 2(1) + 4
5 = 2 + 4
5 = 6 (false statement)
Answer:
x = 5
Step-by-step explanation:
3/2x is same as 15/10x
6/5x is same as 12/10x
3/10x = 3/2
cross-multiply:
6x = 30
x = 5
Answer:
Step-by-step explanation:
Essentially, begin by flipping the x and y terms:
x = (1 - 2y)^2 + 5
Then, solve for y:
Because we know there is only 1 y-value for any given x-value, the inverse of the given function is also a function.
17 feet...use Pythagorean theorem to solve the length of the four hypotenuse of the four triangles you can produce from that shape.