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valentina_108 [34]
3 years ago
13

A florist shop represents its first month’s sales with the equation y=168x+8, where x represents the number of days that the sho

p is open and y represents the sales in dollars. The owner of the shop would like to calculate the number of days it took to reach $3,200 in sales. Which would be used to solve the problem?
A-Substitute 3,200 for x.
B-Add 8 and 3,200.
C- Divide 3,192 by 168.
D-Isolate y in the equation.
Mathematics
2 answers:
S_A_V [24]3 years ago
7 0
The answer is C 
you substitute 3200 in for y
3200 = 168x +8
3192 = 168x
x=19
ahrayia [7]3 years ago
3 0

Answer:

Option C is the answer.

Step-by-step explanation:

A florist sale is for it's first month is represented by the equation y = 168x + 8

Here y represents the sales in dollars and x represents number of days.

Now we have to calculate the number of days it took to reach $3200 in sales.

For this we will substitute $3200 in place of y and find the value of x by solving the equation.

3200 = 168x + 8

168x = 3200 - 8 = 3192

x=\frac{3192}{168}=19

Therefore Option C. is the correct option.

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Which of the following is not always true for a function? A. Each x-value has only one y-value. B. The range is the y-values. C.
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c

Step-by-step explanation:

A is True

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The water in the reservoir decreases by 47% during a drop period before the drought the reservoir had 44,580 acre feet of water
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3 years ago
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The height of a women in the united states are normally distributed with a mean of 64 inches and a standard deviation of 2.75 in
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Answer:

The area under the curve that represents the percent of women whose heights are at least 64 inches is 0.5.

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, or the area under the curve representing values that are lower than x. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X, which is the same as the area under the curve representing values that are higher than x.

In this problem, we have that:

\mu = 64, \sigma = 2.75

Find the area under the curve that represents the percent of women whose heights are at least 64 inches.

This is 1 subtracted by the pvalue of Z when X = 64.

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

Z = \frac{64 - 64}{2.75}

Z = 0

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1 - 0.5 = 0.5

The area under the curve that represents the percent of women whose heights are at least 64 inches is 0.5.

5 0
2 years ago
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