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Sum of adjacent angles on a straight line is 180°
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∠ABD + ∠CBD = 180°
(2x + 7) + (5x - 2) = 180
2x + 7 + 5x - 2 = 180
7x + 5 = 180
7x = 180 - 5
7x = 175
x = 25
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Answer: x = 25
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Answer:
3v-v² = v(3-v)
Step-by-step explanation:
Use distributive property on the right side of the equality.
It will take 2 and 1/2 hours to plant the 35 flowers.
Answer:
There is a 3.33% probability that exactly two such busses arrive within 3 minutes of each other.
Step-by-step explanation:
In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:
In which
x is the number of sucesses
e = 2.71828 is the Euler number
is the mean in the given time interval.
What is the probability that exactly two such busses arrive within 3 minutes of each other
The mean is one bus each 10 minutes. So for 3 minutes, the mean is 3/10 = 0.3 buses. So we use
This probability is P(X = 2).
There is a 3.33% probability that exactly two such busses arrive within 3 minutes of each other.
The number is 84. If you find numbers that equal 12 that are both one digit numbers, you have 9 and 3, 8 and 4, and 7 and 5. If you put 48, together they equal 12. If you divide 84 by 7, you will get 12. 84 reversed is 48, which is 4 times 12. So if you times 84 by 4/7, you will get 48.