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3 years ago

What are the coordinate ofB'? after a translation of (x,y-6

Mathematics

1 answer:

stich3 [128]3 years ago

6 0

You’re B’ coordinate would be (3,-2) the way I got this was x is zero so x would not move left nor right. The only way you would go is down because you have a negative six so you would move down 6 spaces

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Denise is constructing a square. she has already used her straightedge and compass to construct the circle, lines, and arcs show

Novosadov [1.4K]

What should denise do for her next step?

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I hope it helps, Regards.

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3 years ago

The weight of a small Starbucks coffee is a normally distributed random variable with a mean of 330 grams and a standard deviati

just olya [345]

Answer:

Weights of at least 340.1 are in the highest 20%.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore 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 pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 330, \sigma = 12$

a. Highest 20 percent

At least X

100-20 = 80

So X is the 80th percentile, which is X when Z has a pvalue of 0.8. So X when Z = 0.842.

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

$0.842 = \frac{X - 330}{12}$

$X - 330 = 12*0.842$

$X = 340.1$

Weights of at least 340.1 are in the highest 20%.

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2 years ago

Ben is taking a typing class, and the following line graph represents the number of words per minute he was able to type each we

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During week 2, he could type 15 words per minute, at his fourth week, he could type 30. So 30-15=15. He could type 15 words faster on week 4 than he could at week 2.

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3 years ago

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What’s the question?

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