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3 years ago

The probability of an event not happening is

1 answer:

3 0

the probability of an event occurring, it is easy to compute the probability that the event does not occur. If P(A) is the probability of Event A, then 1 - P(A) is the probability that the event does not occur. For the last example, the probability that the total is 6 is 5/36.

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Which model shows the correct factorization of x2 – x – 2? Image for option 1 Image for option 2 Image for option 3 Image for op

Contact [7]

Hint: Please express exponentiation with the "^" symbol: x^2 - x - 2.

Note that the final term factors to (-2)(-1), and that -2x and +1x combine to produce the middle term, -x. Thus, the factors of this polynomial are

(x+1)(x-2).

Please do not refer to "Image for Option 1," etc., unless you are actually sharing the image!

6 0

3 years ago

Read 2 more answers

PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA 40 POINTS* DONT SKIP :(( .!

Harrizon [31]

180-53 is 127 angle 6 and 3 would be the same so your answer is 127

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3 years ago

Stan drove for h hours at a constant rate of r miles per hour. How many miles did he cover during the final 20 minutes of his dr

photoshop1234 [79]

20 minutes is $\frac{1}{3}$ of an hour (60 minutes).

Stan's constant rate is r miles per hour, which means he drove r miles in 60 minutes. So how many miles did he drive in 20 minutes? As explained in the first line, 20 minutes is $\frac{1}{3}$ of an hour. Since his rate is constant, Stan would drive $\frac{1}{3}$ of what he cover in 60 minutes, which is r miles.

Hence, Stan drove $\frac{1}{3}r$ miles in 20 minutes.

ANSWER: $\frac{1}{3}r$ miles

7 0

3 years ago

which of the following would be neither perpendicular nor parallel to the following equation. y=3x-7. equations: y=-1/3x-7, y=-1

UkoKoshka [18]

Answer:

y=1/3x+6

Step-by-step explanation:

Equations parallel to each other have the same slope so that rules out the fourth answer. Perpendicular equations have opposite and reciprocal slopes, which in this case would be $\frac{-1}{3}$ , which rules out all of the others except for the third option.

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3 years ago

A USA Today/CNN/Gallup survey of 369 working parents found 200 who said they spend too little time with their children because o

KengaRu [80]

Answer: a. 0.542

b. 0.051

c. $(0.491,\ 0.593)$

Step-by-step explanation:

Let p be the population proportion of parents spend too little time with their children because of work commitments

As per given , we have

n= 369

$\hat{p}=\dfrac{200}{369}=0.542005420054\approx0.542$

Since the sample proportion is the best estimate for the population proportion.

So , the point estimate of the proportion of the population of working parents who feel they spend too little time with their children because of work commitments = 0.542

z-value for 95% confidence interval : $z_{\alpha/2}=1.96$

Margin of error : $E=z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$E=(1.96)\sqrt{\dfrac{0.542(1-0.542)}{369}}\\\\=0.0508364564574\approx0.051$

The margin of error = 0.051

Confidence interval : $\hat{p}\pm E$

$0.542\pm0.051\\\\=(0.542-0.051,\ 0.542+0.051)\\\\=(0.491,\ 0.593)$

95% confidence interval estimate of the population proportion of working parents who feel they spend too little time with their children because of work commitments : $(0.491,\ 0.593)$

6 0

3 years ago