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3 years ago

(3 1/2 - 9 3/4) ÷ (-2.5)

Mathematics

1 answer:

professor190 [17]3 years ago

4 0

exact form

5/2

decimal form

2.5

mixed number form

2 1/2

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A single standard six sides die is rolled. what is the probability the roll is a multiple of three given that it is an even numb

tankabanditka [31]

33.3%

Since we are given that it is an even number, we know there is only 3 options (2, 4, 6). Since only one of them is an even number, we know that we need the fraction 1/3 or 33.3% for a probability.

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2 years ago

What type of association does there appear to be between the variables? explain

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Where are the variables for the equation?

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3 years ago

If y=3 when x=4,find y when x=6

borishaifa [10]

Answer:

Step-by-step explanation:

(x)(y) = k Inverse relationship

(4)(3) = k

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2 years ago

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Your lunch bill for Saturday after noon is $12.19. You leave a 20% tip and are charged 8% sales tax. Your lunch bill for Sunday

m_a_m_a [10]

Answer:

You pay more for your lunch bill on Sunday

Step-by-step explanation:

You pay a total of $15.80 on Saturday and $16.27 on Sunday

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2 years ago

The heights of adult males in the United States are approximately normally distributed. The mean height is 70 inches (5 feet 10

steposvetlana [31]

Using the normal distribution, it is found that the probability is 0.16.

<h3>Normal Probability Distribution</h3>

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

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

It 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, which is the percentile of X.

In this problem, the mean and the standard deviation are given by, respectively, $\mu = 70, \sigma = 3$ .

The proportion of students between 45 and 67 inches is the p-value of Z when <u>X = 67 subtracted by the p-value of Z when X = 45</u>, hence:

X = 67:

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

$Z = \frac{67 - 70}{3}$

Z = -1

Z = -1 has a p-value of 0.16.

X = 45:

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

$Z = \frac{45 - 70}{3}$

Z = -8.3

Z = -8.3 has a p-value of 0.

0.16 - 0 = 0.16

The probability is 0.16.

More can be learned about the normal distribution at brainly.com/question/24663213

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2 years ago