Answer:
i want to say it is b but i could be wrong
Step-by-step explanation:
Answer:
k=4
Step-by-step explanation:
-127=2k-5(5k+7)
Distribute the -5 to the 5k and 7 to give you -25k - 35
-127=2k-25k-35
Combine like terms (2k - 25k)
-127=-23k - 35
Add 35 to both sides
-92=-23k
Divide both sides by -23
k=4
There are a total of 8 balls
The probability of drawing a white ball is 4/8 on the first draw.
If you replace the ball then the probability will still be 4/8 for a white ball, since these events are independent of each other you multiply 4/8 x 4/8 = 16/64 or 1/4 then the probability of drawing at least 1 red ball with replacement is 1 - 1/4 = 3/4
Now without replacement:
the probability of drawing a white ball is 4/8 since you don't replace the ball then the probability of drawing a white ball the second time is 3/7 again multiply these two probabilities: 4/8 x 3/7 = 12/56 the the probability of drawing at least 1 red ball is 1- 12/56 = 44/56 or 11/14
Answer: for the answer its 35 trust /%
Step-by-step explanation:
