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nexus9112 [7]
3 years ago
14

Solve the proportion: A printer can print 11 color pages in 2 minutes. How many color pages can the printer print in 7 minutes?

Mathematics
1 answer:
Ann [662]3 years ago
6 0

Answer:

38.5

Step-by-step explanation:

7/2 = 3.5. 11×3.5= 38.5

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A random sample of 100 automobile owners in thestate of Virginia shows that an automobile is driven onaverage 23,500 kilometers
Anastaziya [24]

Answer:

a) 22497.7 < μ< 24502.3

b)  With 99% confidence the possible error will not exceed 1002.3

Step-by-step explanation:

Given that:

Mean (μ) = 23500 kilometers per year

Standard deviation (σ) = 3900 kilometers

Confidence level (c) = 99% = 0.99

number of samples (n) = 100

a) α = 1 - c = 1 - 0.99 = 0.01

\frac{\alpha }{2} =\frac{0.01}{2}=0.005\\ z_{\frac{\alpha }{2}}=z_{0.005}=2.57

Using normal distribution table, z_{0.005 is the z value of 1 - 0.005 = 0.995 of the area to the right which is 2.57.

The margin of error (e) is given as:

e= z_{0.005}\frac{\sigma}{\sqrt{n} }  = 2.57*\frac{3900}{\sqrt{100} } =1002.3

The 99% confidence interval = (μ - e, μ + e) = (23500 - 1002.3, 23500 + 1002.3) =  (22497.7, 24502.3)

Confidence interval = 22497.7 < μ< 24502.3

b) With 99% confidence the possible error will not exceed 1002.3

5 0
3 years ago
Plz plz help I’m failing math and need help
diamong [38]

Answer:

5 sweat shirts- $100

8 sweat shirts- $160

9 sweat shirts- $180

12 sweat shirts- $240

Step-by-step explanation:

Each sweat shirt costs $20

5 0
3 years ago
Diego says that the product of 0.51 times 2.427 will have five decimal places.is Diego correct?
labwork [276]
No, the decimal will be over four places
7 0
3 years ago
There are three rows of VIP seats in each section. Each row
Pavel [41]

Answer:

The answer is 576 seats

Step-by-step explanation:

3 rows x 12 seats = 36 seats in one section

36 seats in one section x 16 sections = 576 seats

6 0
3 years ago
Eighteen out of every 24 people surveyed say they went to at least one movie in December. what fraction of the people surveyed w
cricket20 [7]

Answer:

3/4

Step-by-step explanation:

18/24

divide both sides by 6 to get 3/4

5 0
3 years ago
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