Please help if u get all 3 right ill put u as brainiest !

A $10 shirt was sold for $16. What was the percent of change?

zloy xaker [14]

Answer:

62.5%

Step-by-step explanation:

10x100 divded by 16 =62.5

3 0

3 years ago

The weekly amount of money spent on maintenance and repairs by a company was observed, over a long period of time, to be approxi

VikaD [51]

Answer:

$512.90 should be budgeted for weekly repairs and maintenance so that the probability the budgeted amount will be exceeded in a given week is only 0.05

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions 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:

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

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.

Normally distributed with mean $480 and standard deviation $20.

This means that $\mu = 480, \sigma = 20$

How much should be budgeted for weekly repairs and maintenance so that the probability the budgeted amount will be exceeded in a given week is only 0.05?

This is the 100 - 5 = 95th percentile, which is X when Z has a pvalue of 0.95, so X when Z = 1.645.

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

$1.645 = \frac{X - 480}{20}$

$X - 480 = 1.645*20$

$X = 512.9$

$512.90 should be budgeted for weekly repairs and maintenance so that the probability the budgeted amount will be exceeded in a given week is only 0.05

5 0

3 years ago

A restaurant had 5 pies each cut into eighths. By noon 3/4 of all the pieces were sold. How many pieces of the pie were sold by

Ad libitum [116K]

Answer:

30

Step-by-step explanation:

5 pies * 8 pieces = 40 total pieces

40 * 3/4 =

40/1 * 3/4 =

120/4 = 30

5 0

3 years ago

You earn $100 plus 1/5 of your sales each week. What dollar amount of sales do you need this week to earn $600?

meriva

Answer:

You'll need $2,500 in sales this week to end up with $600 in income for the week.

Step-by-step explanation:

Let s represent the dollar amount of the total sales for the week.

The commission earned on such sales is 1/5, or 0.20, of s:

Commission: 0.20s

Then the correct expression for your weekly income is:

$100 + 0.20s = $600.

Solving for s, subtract $100 from both sides. Then 0.20s = $500, and through division we get s = $2,500.

You'll need $2,500 in sales this week to end up with $600 in income for the week.

8 0

3 years ago

2(5x+4)=10x+6 Someone can help me?

Oliga [24]

Answer:

4 0

3 years ago

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Please help if u get all 3 right ill put u as brainiest !​

Please help if u get all 3 right ill put u as brainiest !