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BartSMP [9]
3 years ago
14

Wayne needs to drive 470 miles to reach Milwaukee. Suppose he drives at a constant speed of 50 miles per hour. Which function re

presents Wayne’s distance i
n miles from Milwaukee in terms of the number of hours he drives?
Answer choices:
A y = 420x
B y = 470 + 50x
C y = 50 - 470x
D y = 50 + 470x
E y = 470 - 50x
Mathematics
1 answer:
Savatey [412]3 years ago
5 0
B: Because your slope is 50 because it says "per hour" so this leaves out answers A,C, and D. Now you only answers B and E. E is wrong because its a negitve slope and there's nothing in this problem that makes it a negative, so your answer is B
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Carrie spent 1/4 of her allowance on a shirt, 1/3 of her allowance on a skirt, and $8 on a belt. If she spent $22 in all, how mu
vlada-n [284]

Answer:

$24

Step-by-step explanation:

1/4x + 1/3x + 8 = 22

1/4x + 1/3x = 7/12x

7/12x + 8 = 22

22 - 8 = 14

7/12x = 14

14/ 7/12

x = 24

7 0
2 years ago
Birth weights at a local hospital have a Normal distribution with a mean of 110 oz and a standard deviation of 15 oz. The propor
OLga [1]

Answer:

The proportion of infants with birth weights between 125 oz and 140 oz is 0.1359 = 13.59%.

Step-by-step explanation:

When the distribution is normal, we use 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 question, we have that:

\mu = 110, \sigma = 0.15

The proportion of infants with birth weights between 125 oz and 140 oz is

This is the pvalue of Z when X = 140 subtracted by the pvalue of Z when X = 125. So

X = 140

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

Z = \frac{140 - 110}{15}

Z = 2

Z = 2 has a pvalue of 0.9772

X = 125

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

Z = \frac{125 - 110}{15}

Z = 1

Z = 1 has a pvalue of 0.8413

0.9772 - 0.8413 = 0.1359

The proportion of infants with birth weights between 125 oz and 140 oz is 0.1359 = 13.59%.

4 0
3 years ago
What is the answer too 2(4w-1)=-10(w-3)+4
Advocard [28]

Answer:

w = 2

Step-by-step explanation:

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 8w - 2 = -10w + 30 + 4

 8w - 2 = -10w + 34

+10w       +10w

18w - 2 = 34

      +2     +2

<u>18w</u> = <u>36</u>

18       18

w = 2

5 0
2 years ago
Based on the table of values below, find the slope between points where x = 1 and where x = 4.
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7 0
3 years ago
Read 2 more answers
Given this graph, which equation below would give you this graph?
Shalnov [3]

Answer:

Sally has seven times as many dimes as nickels. Their value is $3.00. How many nickels does she have?

4 nickels

7 nickels

28 nickels

Step-by-step explanation:

7 0
2 years ago
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