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vfiekz [6]
3 years ago
13

the angle of elevation of a top of a tree from a certain point on the ground is 45 degree. if the tree is 15 meters high,how is

the point from the bottom of the tree.​
Mathematics
1 answer:
Sphinxa [80]3 years ago
6 0

Answer:

15m

Step-by-step explanation:

tan° = opposite/ adjacent

tan45 = 15/x

1 = 15/x

and = 15

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According to a recent​ study, 9.3​% of high school dropouts are​ 16- to​ 17-year-olds. In​ addition, 6.4​% of high school dropou
Finger [1]

Answer:

0.688 or 68.8%

Step-by-step explanation:

Percentage of high school dropouts = P(D) = 9.3% = 0.093

Percentage of high school dropouts who are white = P(D \cap W) = 6.4% = 0.064

We need to find the probability that a randomly selected dropout is​ white, given that he or she is 16 to 17 years​ old. This is conditional probability which can be expressed as: P(W | D)

Using the formula of conditional probability, we ca write:

P(W | D)=\frac{P(W \cap D)}{P(D)}

Using the values, we get:

P( W | D) = \frac{0.064}{0.093} = 0.688

Therefore, the probability that a randomly selected dropout is​ white, given that he or she is 16 to 17 years​ old is 0.688 or 68.8%

4 0
3 years ago
When rolling two dice , there are blank different ways to roll at least one 4.
Ann [662]

Answer:

3

Step-by-step explanation:

These 3 ways are:

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  2. The second die showing a 4 and the first die showing a different number
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7 0
3 years ago
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Step-by-step explanation:

3 0
3 years ago
Write an explicit formula for the sequence and find the 18th term.<br> -4, 12, -36...
Molodets [167]

Answer:

an = -4 * (-3)^ (n-1)

513560652

Step-by-step explanation:

We can find the common ratio

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an = -4 * (-3)^ (n-1)

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4 0
3 years ago
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Step-by-step explanation:

- 1⅔ < -¼

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3 0
3 years ago
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