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irga5000 [103]
3 years ago
8

What is the slope of the line that is perpendicular to the line v=3/4x-6

Mathematics
1 answer:
emmasim [6.3K]3 years ago
6 0
The answer is D -4/3 = slope
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An instructor of a biology class believes the average final exam score for his biology class was more than 75. Suppose a sample
likoan [24]

Answer:

The value for the test statistics = 3.48

Step-by-step explanation:

Given that:

population mean \mu = 75

sample size n = 25

sample mean \overline x= 78.48

standard deviation = 5

The value for the test statistics can be computed by using the formula:

z = \dfrac{\overline x- \mu}{\dfrac{\sigma}{\sqrt{n}}}

z = \dfrac{78.48- 75}{\dfrac{5}{\sqrt{25}}}

z = \dfrac{3.48}{\dfrac{5}{5}}

z = 3.48

The value for the test statistics = 3.48

3 0
3 years ago
2 A marathon race is 42 195 m in length. The world record in 2016 was
Verizon [17]

Answer:

A. 7377 s

B. 5.72 m/s

C. 5.86 m/s

Step-by-step explanation:

A. Determination of the time in second.

Time (t) = 2 hours, 2 minutes and 57 seconds

We'll begin by converting 2 hours to seconds. This can be obtained as follow:

1 hour = 3600 s

Therefore,

2 hour = 2 hours × 3600 s / 1 hour

2 hours = 7200 s

Next, we shall convert 2 mins to seconds. This can be obtained as follow:

1 min = 60 s

Therefore,

2 mins = 2 mins × 60 s / 1 min

2 mins = 120 s

Finally, we shall determine the total time in second. This can be obtained as follow:

2 hours, 2 minutes and 57 seconds = 7200 s + 120 s + 57 s

= 7377 s

Therefore, the total time in second is 7377 s

B. Determination of the average speed.

Total distance = 42195 m

Total time = 7377 s

Average speed =?

Average speed = Total distance / total time

Average speed = 42195 / 7377

Average speed = 5.72 m/s

Therefore, the average speed is 5.72 m/s

C. Determination of the average speed.

We'll begin by converting 2 hours to seconds. This can be obtained as follow:

1 hour = 3600 s

Therefore,

2 hour = 2 hours × 3600 s / 1 hour

2 hours = 7200 s

Finally, we shall determine the average speed. This can be obtained as follow:

Total distance = 42195 m

Total time = 7200 s

Average speed =?

Average speed = Total distance / total time

Average speed = 42195 / 7200

Average speed = 5.86 m/s

Therefore, the average speed is 5.86 m/s.

7 0
3 years ago
Help please !!!!!!!!!!
kompoz [17]
I think you posted several of times I put my response in another post
3 0
3 years ago
Factor completely 4x2 + 16x.
Andrew [12]
First factor out the gcf.

4x(x+4)

The inner binomial cannot be factored so that is the final answer.
4 0
3 years ago
Read 2 more answers
A rectangular piece of metal is 20 in longer than it is wide. Squares with sides 4 in long are cut from the four corners and the
Arte-miy333 [17]

Answer:

width = 12.5

Step-by-step explanation:

rectangular volume = height * width * length

1200 = 4 * w * (20 + 4)

1200 = 4 * w * 24

1200 = 96w

12.5=w

3 0
3 years ago
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