Answer:
The answer should be D.
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Answer:
We have, 63% × x = 252
or,
63/100 × x = 252
Multiplying both sides by 100 and dividing both sides by 63,
we have
x = 400
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Step-by-step explanation:
a. P(mites OR ticks) = P(mites) + P(ticks) − P(mites AND ticks)
P(mites OR ticks) = 0.80 + 0.30 − 0.20
P(mites OR ticks) = 0.90
b. P(no ticks | mites) = P(no ticks AND mites) / P(mites)
P(no ticks | mites) = (0.80 − 0.20) / 0.80
P(no ticks | mites) = 0.75
c. If two events are independent, then P(A and B) = P(A) × P(B).
P(mites AND ticks) = 0.20
P(mites) × P(ticks) = 0.80 × 0.30 = 0.24
They are not independent.
Answer: You would have to send 300 text messages
Step-by-step explanation:
1. Turn problem into 20 + 0.10x = 50
2. Subtract 20 from both sides to get 0.10x = 30
3. Divide both sides by 0.10 to get x = 300
Answer:
m = 4
Step-by-step explanation:
