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Dimas [21]
2 years ago
10

My sister needs help!

Mathematics
2 answers:
arlik [135]2 years ago
6 0

.....................

rodikova [14]2 years ago
6 0
the answer would be 2=1/2 x +B
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Joe is hiking a trail that is 30 miles long. after several days, he is two times as far from the beginning of the trail as he is
lora16 [44]
In order to answer this question let's suppose,
Joe is x miles from the beginning and y miles from the end. These assumptions are necessary to answer further:

Now,
x=2y
x+y=30
plugging in x=2y in the above equation
2y+y=30
3y=30
y=10

Hence, according to our calculations, Joe has to hike 10 miles further
5 0
3 years ago
How likely is it that you would push a green button if your eyes are closed
Harrizon [31]

Answer:

This really depends on the situation, and many variables. Is there a specific moment? Multiple buttons? Would you mind giving more context or is that it?

8 0
3 years ago
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NEED HELP!!<br><br> Complete the sentence. <br> 60% of _______ peaches is 15 peaches.
goblinko [34]
25 ! i hope this helps :)
7 0
3 years ago
the Wall Street Journal reported that automobile crashes cost United States $162 billion annually. The average cost per person f
Tanya [424]

Answer:

a) Margin of error = 166.311

b) sample size ≥ 62

Step-by-step explanation:

Given:

Average cost = $1599

Sample size = 50 persons

Standard deviation = $600

Confidence level is 95%

a) Margin of error = z\frac{\sigma}{\sqrt{n}}

Now for confidence level of 95% z-value = 1.96

Thus,

Margin of error = 1.96\frac{600}{\sqrt{50}}

or

Margin of error = 166.311

b) For Margin of error ≤ 150

z\frac{\sigma}{\sqrt{n}} ≤ 150

or

1.96\frac{600}{\sqrt{n}} ≤ 150

or

1.96\frac{600}{150} ≤ √n

or

√n ≥ 7.84

or

n ≥ 61.4656

Therefore,

sample size ≥ 62

6 0
3 years ago
Someone please help?
PIT_PIT [208]
The last one is right
3 0
3 years ago
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