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3 years ago

If y=9 when x=7 find y when x=2?

Mathematics

1 answer:

PilotLPTM [1.2K]3 years ago

3 0

Is that all the information? it could literally be any number with only that.

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according the the american hotel and motel association, women are expected to account for half of all business travelers by the

Slav-nsk [51]

Answer: 0.71221

Step-by-step explanation:

We know that for binomial distribution :-

$\mu=np\ \ ;\ \sigma=\sqrt{np(1-p)}$ , where p is the proportion of success in each trial and n is the sample size.

Given : p=0.80 ; n=20

Then, $\mu=20(0.8)=16\ \ ;\ \sigma=\sqrt{20(0.8)(0.2)}=1.79$

Let X be the binomial variable.

z-score : $z=\dfrac{x-\mu}{\sigma}$

For x=9

$z=\dfrac{9-16}{1.79}=-3.91$

For x=17

$z=\dfrac{17-16}{1.79}=0.56$

Then, the probability that more than 9 but less than 17 of the hotels in the sample is given by :-

$P(9$

Hence, the probability that more than 9 but less than 17 of the hotels in the sample = 0.71221

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3 years ago

Bradley and his family drove to visit a museum. They drove 9/25 of the way and stopped for gasoline. Write the fraction of the d

labwork [276]

The answer is 0.36.

Hope this helped! :)

5 0

3 years ago

Read 2 more answers

Question 15 of 20 :

musickatia [10]

Answer:

the answer is A

Step-by-step explanation:

$\frac{x}{2} = 17$

$x = 17 \times 2$

$x = 34$

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2 years ago

A book sold 39,400 copies in its first month of release. suppose this represents 8.9% of the number of copies sold to date. how

pishuonlain [190]

<span>The book has sold 442,696 copies to date. This was calculated by making a proportion: 8.9 : 39,400 = 100 : X where X Is the number of copies sold. Then I calculated 39,400*100/8.9 to obtain the answer</span>

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3 years ago

Pls help me with 19,20 pls thx and show me how u did it

Anastasy [175]

For number 19:
"at least 150" means either 150 ≤ ? or ? ≥ 150

plus 3 so +3x

The answer would be 150 ≤ 100 + 3x

Number 20:

A is at -2.5. The inverse is the opposite so 2.5

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3 years ago