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3 years ago

I don’t get this problem :/

Mathematics

1 answer:

Nonamiya [84]3 years ago

6 0

The answer is D because you have 300 dollars, and add 250 for x amount of months, whatever number x stands for, so if x stands for two, you add 500 dollars, for x standing as 3, you add 750 dollars, and so on and so forth. Hope this helps!

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Heights of women have a bell-shaped distribution with a mean of 161 cm and a standard deviation of 7 cm. What percent of women f

harkovskaia [24]

Answer:b

Step-by-step explanation:d

504

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2 years ago

The time it takes a customer service complaint to be settled at a small department store is normally distributed with a mean of

noname [10]

Answer:

0.0475 = 4.75% probability that a randomly selected complaint takes more than 15 minutes to be settled.

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.

Mean of 10 minutes and a standard deviation of 3 minutes

This means that $\mu = 10, \sigma = 3$

Find the probability that a randomly selected complaint takes more than 15 minutes to be settled.

This is 1 subtracted by the p-value of Z when X = 15, so:

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

$Z = \frac{15 - 10}{3}$

$Z = 1.67$

$Z = 1.67$ has a p-value of 0.9525.

1 - 0.9525 = 0.0475.

0.0475 = 4.75% probability that a randomly selected complaint takes more than 15 minutes to be settled.

5 0

3 years ago

Line AB contains points A (0, 1) and B (1, 5). The slope of line AB is

hammer [34]

Slope = 1-5/0-1 = 4
the answer is 4

6 0

3 years ago

• Adam has x baseball cards

castortr0y [4]

Answer:

Carlos=8x

Step-by-step explanation:

b=Ben

b=2x

c=Carlos

c=8x

7 0

3 years ago

Please answer this math question.

Molodets [167]

Answer:

21 minutes

Step-by-step explanation:

To cut a 5-ft log into 5 equal peices, you need to make 4 cuts (each cut cuts one piece from a whole log, the last cut divides the remaining log into two pieces).

If it takes $5\dfrac{1}{4}$ minutes to make one cut, then it takes

$5\dfrac{1}{4}\cdot 4=\dfrac{5\cdot 4+1}{4}\cdot 4=\dfrac{21}{4}\cdot 4=21$

minutes to cut the log into 5 equal pieces.

7 0

4 years ago