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notsponge [240]
3 years ago
13

Someone know the answer ??If you know , Can you help me, please ???

Mathematics
1 answer:
Pie3 years ago
7 0
You do 80km/1hr = n/3.75

Use this proportion to find that n=300

So, he drives 800km.
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Solve the systems of equations by substitution<br> 3/8x + 1/3y = 17/24<br> X + 7y = 8
Sedaia [141]

Answer:

If your solving for y...

The answer would be: y = -9/8x + 17/8 I believe.

For the second one... it would be : y = -1/7x + 8/7

Step-by-step explanation:

8 0
3 years ago
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Answer choices <br> a. -4/3 <br> b. -3/4 <br> c. 3/4<br> d. 4/3
Bingel [31]

Answer:

Step-by-step explanation:

(0, 1) (4, -2)

(-2 - 1)/(4 -0) = -3/4

7 0
3 years ago
A police officer claims that the proportion of accidents that occur in the daytime (versus nighttime) at a certain intersection
Roman55 [17]

Answer: -1.78

Step-by-step explanation:

As per given description, we have

Population proportion : p=0.35

Sample size : n= 500

Sample proportion : \hat{p}=\dfrac{156}{500}=0.312

Test statistic for population proportion :-

z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}\\\\\\=\dfrac{0.312-0.35}{\sqrt{\dfrac{0.35(1-0.35)}{500}}}\\\\=-1.78146747757\ \ \text{(Simplified)}\\\\\approx-1.78

Hence, the test statistic for this hypothesis test for a proportion= -1.78

3 0
3 years ago
Explaining it thoroughly and you will be mark as Brainiest…
siniylev [52]

Answer:

Can you not make your own video or something

Step-by-step explanation:

3 0
3 years ago
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For Restaurant A, the owner wants to advertise a good cleanliness score to his customers. Which measure would make his score see
Semenov [28]

Answer:

median

Step-by-step explanation:

the median would make the score as good as possible, because there could be possible outliers. this really depends on if there are outliers or not. here is an example of what i need:

say you are trying to show your parents your grades:

here are your scores:

38, 88, 90, 91, 93, 95, 100

the median would be 91, which looks better.

the mean would be 85.

even though a <em>majority</em> of your grades are good, the one 38 makes the average go down. therefore, the median is a better advertiser.

8 0
4 years ago
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