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jeyben [28]
3 years ago
6

The mean commuting time for resident of a certain metropolitan are is 38 minutes, with a standard deviation of 10 minutes. Assum

e that commuting times for this are are normally distributed. Using the z-score for a 23-minute commute above , what is the probabilty that a commute for a randomly chosen residet will be between 28 minutes and 58 minutes?
A. 92.3%
B. 81.9%
C. 76.4%
D.84.0%
Mathematics
1 answer:
ale4655 [162]3 years ago
8 0

the answer is 81.9% hope this question will be helpful

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Onondaga Electronics operates on a net-profit rate of 20% on its printer cables. If the markup is $8.95 and the overhead is $4.3
asambeis [7]

Answer:

The selling price be $79.56 .

Step-by-step explanation:

Let us assume that the cost price be x.

As given

If the markup is $8.95 and the overhead is $4.31 .

Selling price = Cost price + Markup price + Overhead price

                    =  x + 8.95 + 4.31

                    = x + 13.26

Profit = Selling price - Cost price

         =  x + 13.26 - x

         = $ 13.26

Formula

Profit\ percentage = \frac{Profit\times 100}{Cost\ price}

Putting the values in the above formula

20= \frac{13.26\times 100}{x}

x= \frac{13.26\times 100}{20}

x= \frac{1326}{20}

x = $ 66.3

Thus cost price be $66.3 .

Thus

Selling price =  $66.3 + $13.26

                     = $ 79.56

Therefore the selling price be $79.56 .


5 0
3 years ago
Please help me I need help as soon as possible
kotykmax [81]
You can find the perimeter by just counting the distance of every line segment all around the shape since they have vertical and horizontal slopes.
8 0
3 years ago
What is the answer to this question? Someone help!!
nirvana33 [79]
Her expenses are a fixed expense of $4500 and a weekly expense of $200.
Let's call the unknown number of weeks w.

In w weeks, the weekly expenses will by 200w.
The total expense is

200w + 4500

In a week, when earns $550. In w weeks, she earns 550w.

Set the expenses equal to the earnings and solve for w.

550w = 200w + 4500

Subtract 200w from both sides.

350w = 4500

w = 12.86

It takes her 12.86 weeks to break even.
If she works 13 weeks, she begins to make a profit.
5 0
4 years ago
I used a calculator and have solved it without. I didn't get any of these answers. HELP
Andreas93 [3]

Answer:

-9 + 7√5.

Step-by-step explanation:

(3 - √5)(2 + 3√5)

= 3(2 + 3√5) - √5(2 + 3√5))

= 6 + 9√5 - 2√5 - 15

= -9 + 7√5.

6 0
3 years ago
How much yarn did Siera use for her project?
Westkost [7]

Answer:

C

Step-by-step explanation:

Well she had 11.5 so subtract how much she has left witch is 5.25 so you get 6.25 = x

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3 years ago
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