3 years ago

I running track is 400 meters. if i make 4 laps, what is the distance that i traveled?

Mathematics

1 answer:

IgorLugansk [536]3 years ago

5 0

You would have ran 1,200 meters

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Last Question...Please help if you can...(25 points if you answer this)

tresset_1 [31]

Answer:

Annie- 17 hours, Brian- 3 hours

Step-by-step explanation:

Let the number of hours Annie travelled be a, and same of Brian be b

Then we have

a + b = 20
a = 5b + 2

Substituting a in the first equation

5b + 2 + b = 20
6b = 20 - 2
6b = 18
b = 3

Then finding a

a = 20 - 3 = 17

So the answer is:

Annie- 17 hours, Brian- 3 hours

5 0

3 years ago

Please find the answer and explain how you found it

Zigmanuir [339]

The answer is D I made a video incase you can’t see the picture well.
Message me if you want the video.

8 0

3 years ago

Hedi Earns 3% commission on the jewelry she sells each week last week she sold $730 worth of jewelry how much commission did she

cricket20 [7]

730*0.03=21.9

She makes $21.90

4 0

2 years ago

A manufacturer of new light bulbs claims the average lifetime of its long-life bulb is more than 4000 hours. To test this claim,

natka813 [3]

Answer: C. 12.5

Step-by-step explanation:

Given : A manufacturer of new light bulbs claims the average lifetime of its long-life bulb is more than 4000 hours.

Population mean : $\mu=4000$

Sample size : n= 100

Sample mean : $\overline[x}=4500$

Standard deviation: $s=400$

The value of test-statistic is given by :-

$z=\dfrac{\overline{x}-\mu}{\dfrac{s}{\sqrt{n}}}\\\\\Rightarrow\ z=\dfrac{4500-4000}{\dfrac{400}{\sqrt{100}}}\\\\\Rightarrow\ z= 12.5$

Hence, the value of the test statistic for this problem is 12.5.

5 0

2 years ago

In a grade seven class, 18 students have pets, and 12 do not. What percent of the class has a pet?

Svetradugi [14.3K]

Answer :
If 18+12 is 30 and only 18 of them has pets then 70 percent have pets

7 0

3 years ago

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