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Nezavi [6.7K]
3 years ago
14

Estimate 36472-32841

Mathematics
1 answer:
Salsk061 [2.6K]3 years ago
5 0
To estimate you would do 36000-33000=3000
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Darnells car used 8 gallons to travel 340. Miles after a machanic worked on the car it used 7 gallons of gasoline to travel 350
Likurg_2 [28]

Answer:

 What we are going to do for this case is find the cost for each case:

 Cost to run the car before the mechanic worked on it:

 

 Cost to run the car after the mechanic worked on it:

 

 The difference between both cases is:

 

 Answer:

 It cost to run the car after the mechanic worked on it 0.01 $ / mile less than before the mechanic worked on it.

Read more on Brainly.com - brainly.com/question/2528459#readmoreStep-by-step explanation:

5 0
2 years ago
If a manufacturer conducted a survey among randomly selected target market households and wanted to be 95​% confident that the d
katen-ka-za [31]

Answer:

We need a sample size of least 119

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

The margin of error is:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

95% confidence level

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

Sample size needed

At least n, in which n is found when M = 0.09

We don't know the proportion, so we use \pi = 0.5, which is when we would need the largest sample size.

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

0.09 = 1.96\sqrt{\frac{0.5*0.5}{n}}

0.09\sqrt{n} = 1.96*0.5

\sqrt{n} = \frac{1.96*0.5}{0.09}

(\sqrt{n})^{2} = (\frac{1.96*0.5}{0.09})^{2}

n = 118.6

Rounding up

We need a sample size of least 119

6 0
3 years ago
How to solve c/-9+6=14
neonofarm [45]

Answer:

-72

Step-by-step explanation:

step1:  c/-9=8

step2:  c= -72

7 0
3 years ago
Read 2 more answers
Numbers like 10 100 1000 and so on are called
Ad libitum [116K]
Powers of ten, and they're easy to represent as exponents.<span />
6 0
3 years ago
Read 2 more answers
If 7x + 4 = -19 + 5x, then 2x – 14 equals<br>A-23<br>B 23<br>C-37<br>D-14​
drek231 [11]

Answer:

C

Step-by-step explanation:

Here we have the question,

7x+4 = -19 + 5x

Now we add 19 to both sides,

7x + 4 + 19 = -19 + 19 + 5x

7x + 23 = 5x

Now we subtract 7x from both sides,

23 = -2x

We divide -2 from both sides,

x = -23/2

Now we plug this in into 2x - 14,

2(-23/2) - 14 = -23-14 = -37

Our answer is C

7 0
3 years ago
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