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never [62]
3 years ago
7

Which key is longer: 5 cm or 2 in.?

Mathematics
1 answer:
ella [17]3 years ago
4 0
2in is longer because if you convert it into cm it would be 5.08cm.

Hope I Helped!
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The ratio 3 to 4 or 3/4 or 3:4 represents which percent?<br> a 75%<br> b 80%<br> c 50%<br> d 45%
creativ13 [48]

Answer:

a

Step-by-step explanation:

look at it as a quarter. 4 quarters = a dollar or 100 cents. so 3 quarters = 75 cents so 75%

8 0
3 years ago
Read 2 more answers
A small hair salon in Denver, Colorado, averages about 82 customers on weekdays with a standard deviation of 16. It is safe to a
Natali5045456 [20]

Answer:

There is a 3.44% probability to get a sample average of 93 or more customers if the manager had not offered the discount.

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:

A small hair salon in Denver, Colorado, averages about 82 customers on weekdays with a standard deviation of 16. This means that \mu = 82, \sigma = 16

She reports that her strategy has worked since the sample mean of customers during this 7 weekday period jumps to 93. What is the probability to get a sample average of 93 or more customers if the manager had not offered the discount?

This is 1 subtracted by the pvalue of Z when X = 93.

We also have to find a standard deviation of the sample(that is, the 7 days), so:

s = \frac{\sigma}{\sqrt(7)} = \frac{16}{\sqrt(7)} = 6.05

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

Z = \frac{93-82}{6.05}

Z = 1.82

Z = 1.82 has a pvalue of 0.9656.

This means that there is a 1-0.9656 = 0.0344 = 3.44% probability to get a sample average of 93 or more customers if the manager had not offered the discount.

6 0
3 years ago
Are the decimals 0.4 and 0.40 equal ?explain
iren [92.7K]
Yes, because no matter how many 0's are after the decimal, the number stays the same.
6 0
3 years ago
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Write three expressions that are equivalent to 2x+4c-15
Marysya12 [62]

Answer:

um 2x dos

Step-by-step explanation:

7 0
3 years ago
Allen rents a truck for 45 dollars plus .36 cents for every mile that he drives the truck. Write an equation that models this li
enot [183]

Answer:

This is a linear equation of the form y = mx + b, where m is the rate of change and b is the y-intercept, also known as the value of y when x = 0.  Our independent variable is the number of miles we travel, and we will call that x.  If we pay .20 per mile, and miles is "x", we represent that as .20x.  The 70 is the amount we will pay per day even if we drive 0 miles.  Therefore, the equation is:

y = .20x + 70.

I cannot graph this for you here.

We can choose a number of miles, say 100, and solve for our cost:

y = .20(100) + 70

y = 20 + 70

y = 90

We can expect to pay $90 if we drive 100 miles in a day.

Read more on Brainly.com - brainly.com/question/13029200#readmore

Step-by-step explanation:

8 0
3 years ago
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