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r-ruslan [8.4K]
3 years ago
9

1. The sales tax in New York is 8.25%. How much will an $83.99 jacket cost, including sales tax?

Mathematics
1 answer:
konstantin123 [22]3 years ago
4 0
1.) $83.99 * 0.0825= $6.929175  round that to $6.93 add $83.99 +6.93=$90.92

2). $349.65 divided by 7 = $49.95 for each tree


3)V=l*w*h    13*11*16= 2288 cubic feet
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6x^{2} -10x - 4

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An elevator has a placard stating that the maximum capacity is 1296 lb long dash — 8 passengers.​ So, 8 adult male passengers ca
Masja [62]

Answer:

There is a 98.26% probability that it is overloaded.

This elevator does not appear to be safe.

Step-by-step explanation:

Problems of normally distributed samples can be 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}

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. Subtracting 1 by the pvalue, we This p-value is the probability that the value of the measure is greater than X.

In this problem, we have that:

Assume that weights of males are normally distributed with a mean of 170 lb, so \mu = 170

They have a standard deviation of standard deviation of 29 lb, so \sigma = 29.

We have a sample of 8 adults, so we have to find the standard deviation of the sample to use in the place of \sigma in the Z score formula.

s = \frac{\sigma}{8} = \frac{29}{8} = 3.625

Find the probability that it is overloaded because they have a mean weight greater than 162 lb, so X = 162

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

Z = \frac{162 - 170}{3.625}

Z = -2.21

Z = -2.21 has a pvalue 0.0174.

So, there is a 1-0.0174 = 0.9826 = 98.26% probability that it is overloaded.

Any probability that is above 95% is considerer unusually high. So, this elevator does not appear to be safe, since there is a 98.26% probability that it is overloaded.

8 0
3 years ago
0.06 multiplied by 200
horrorfan [7]
Your answer would be 12
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3 years ago
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Is 2x+10 = -2(x-5) equals
faust18 [17]
First distribute -2 to both x and -5

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2x + 10 = -2x + 10

False. 2x + 10 ≠ -2x + 10

False is your answer

hope this helps
3 0
3 years ago
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