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PIT_PIT [208]
3 years ago
5

I NEED HELP FAST PLEAASE I BEG U!!!!!

Mathematics
1 answer:
motikmotik3 years ago
4 0

Answer:

You must mix 2.67 gals. of pure alcohol to obtain the desired mixture.

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What is 28x34+3767.
Mademuasel [1]

Answer:

4719

Step-by-step explanation:

4 0
3 years ago
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X + 2x + 12y + 4 Using the expression shown, add like terms and produce an equivalent expression.
Aleksandr-060686 [28]

Answer: 3x+12y+4

Step-by-step explanation:

The only like terms are the x+2x so we add them to get the simplfied answer

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3 years ago
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Tracy has a long weekend coming up, and she wants to spend all 3 days camping at Moose Hill Forest. She
PSYCHO15rus [73]

Answer:

a 75% chance the weather will stay dry

Step-by-step explanation:

3/4

8 0
2 years ago
Every day, Luann walks to the bus stop and the amount of time she will have to wait for the bus is between 0 and 12 minutes, wit
Nana76 [90]

Answer:

a. 341.902.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

n instances of a normal variable:

For n instances of a normal variable, the mean is n\mu and the standard deviation is s = \sigma\sqrt{n}

60 days, for each day, mean 6, variance of 12.

So

\mu = 60*6 = 360

s = \sqrt{12}\sqrt{60} = 26.8328

What is the 25th percentile of her total wait time over the course of 60 days?

X when Z has a p-value of 0.25, so X when Z = -0.675.

Z = \frac{X - \mu}{s}

-0.675 = \frac{X - 360}{26.8328}

X - 360 = -0.675*26.8328

X = 341.902

Thus, the correct answer is given by option A.

3 0
2 years ago
Find the lowest common denominator. 1/(x+2)^2, 1/(x-2)^2, 2/(x^2-4) A. (x+2)^2 (x-2)^2 B. (x^2+2) (x^2-2)
klasskru [66]

Answer:

(x + 2) ^2 (x - 2) ^ 2 so A is the answer.

Step-by-step explanation:

4 0
3 years ago
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