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azamat
2 years ago
13

parking garage a charge A charge $3 per hour for parking. parking garage B charges of a fee of $ 2 pkus $ 2 per hour for parking

​
Mathematics
2 answers:
I am Lyosha [343]2 years ago
7 0

you good itStep-by-step explanation:

Alisiya [41]2 years ago
3 0
This is correct jesoisuza
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Is 3 x 10 to the 5th power real, imaginary, rational, or irrational?
chubhunter [2.5K]

Answer:

real

Step-by-step explanation:

300000

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2 years ago
The tread life of a particular brand of tire is a random variable best described by a normal distribution with a mean of 60,000
Elis [28]

Answer:

84.13% probability a particular tire of this brand will last longer than 57,100 miles

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 = 60000, \sigma = 2900

What is the probability a particular tire of this brand will last longer than 57,100 miles

This is 1 subtracted by the pvalue of Z when X = 57100. So

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

Z = \frac{57100 - 60000}{2900}

Z = -1

Z = -1 has a pvalue of 0.1587

1 - 0.1587 = 0.8413

84.13% probability a particular tire of this brand will last longer than 57,100 miles

7 0
3 years ago
What is the arithmetic mean of the following numbers? 3, 5, 6, 7, 9, 6, 83,5,6,7,9,6,8
liubo4ka [24]

Answer:

oh wow that's giving me a headache, I dont understand

7 0
2 years ago
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Anna bought a sweater at 40% off the original price. If she paid $12, what was the original price of the sweater?
Snezhnost [94]

Answer:

The original cost was 20 dollars.

Step-by-step explanation:

$12 represents 60% of the original price.

Set up a proportion

  • 60/100 = 12
  • 100% = x

Cross multiply Reduce 100/100 to 1

60/100 * x = 12 * 100/100

Multiply by 100

60/ 100 * x = 12

Divide by 60

60x = 12*100

60x = 1200                                      

60x/60 = 1200/60

x = 20 dollars.

3 0
3 years ago
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Round 0.817 to the hundredth
lubasha [3.4K]
0.800 i am pretty sure
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3 years ago
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