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marin [14]
3 years ago
12

Mary has a rectangular driveway. She measures it and finds out it is 14 1/4 feet long by 17 1/2 feet wide. She wants to know how

many square feet of paint she will need to completely cover the driveway. If each square foot of paint costs 40 cents, how much will she have to pay to cover her driveway? She will have to pay $_________ to cover her driveway. *​
Mathematics
1 answer:
lawyer [7]3 years ago
7 0
If I’m not mistaken it’s 99.75 dollars to cover her whole driveway
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Based on past experience, a telemarketing firm has found that calls to prospective customers take an average of 2.0 minutes, wit
xenn [34]

Answer: Our required probability would be 0.9641.

Step-by-step explanation:

Since we have given that

Number of hours he works a day = 8

So, Number of minutes he worked in a day = 8\times 60=480\ minutes

Number of calls = 220

So, Average =\bar{x}=\dfrac{480}{220}=2.18\ minutes

Standard deviation =s=\dfrac{\sigma}{\sqrt{n}}=\dfrac{1.5}{\sqrt{220}}=0.10

Mean = μ = 2.0 minutes

Standard deviation = σ = 1.5 minutes

Using the normal distribution, we get that

z=\dfrac{\bar{x}-\mu}{s}\\\\z=\dfrac{2.18-2.0}{0.10}\\\\z=1.8

So, the probability that Albert will meet or exceed his quota would be

P(X\leq 2.18)=P(z\leq 1.8)=0.9641

Hence, our required probability would be 0.9641.

6 0
3 years ago
Choose the correct simplification of the expression (2x7y)2(y5)3.
adoni [48]

Im taking this to mean (2 x^7 y)^2 (y^5)^3


= 4x^14 y^2 * y^15


= 4x^14 y^17 which is option 4

8 0
3 years ago
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I need what is the slope of the line graphed
pentagon [3]

Answer:

-3/5

Step-by-step explanation:

3 0
3 years ago
Please help I need it​
Vadim26 [7]
Question four should be -7, question five should be 99, and question six should be 56.

6 0
2 years ago
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FREE POINTSSSSSS<br> 1+3=
pickupchik [31]

Answer: 4

Step-by-step explanation:

1 + 3 = 4. this has gotta be one of the hardest questions i've had to answer on this site

3 0
3 years ago
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