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Shtirlitz [24]
3 years ago
13

a student found the slope of a line that passes through the points (1,14) and (3,4) to be 5. what mistake did she make?

Mathematics
1 answer:
SSSSS [86.1K]3 years ago
4 0
M = (y2-y1)/(x2-x1)
 = (4-14)/3-1
 = -10/2
 = -5
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Pls solve will mark brainiest, five stars and will give a thanks
Goryan [66]

Answer:

8 times

Step-by-step explanation:

3/4 n = 6

Multiply each side by 4/3 to isolate n

4/3 * 3/4 n = 6*4/3

n = 8

8 0
3 years ago
Read 2 more answers
An automotive manufacturer wants to know the proportion of new car buyers who prefer foreign cars over domestic. Step 2 of 2 : S
ziro4ka [17]

Answer:

The 85% onfidence interval for the population proportion of new car buyers who prefer foreign cars over domestic cars is (0.151, 0.205).

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}.

For this problem, we have that:

Sample of 421 new car buyers, 75 preferred foreign cars. So n = 421, \pi = \frac{75}{421} = 0.178

85% confidence level

So \alpha = 0.15, z is the value of Z that has a pvalue of 1 - \frac{0.15}{2} = 0.925, so Z = 1.44.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.178 - 1.44\sqrt{\frac{0.178*0.822}{421}} = 0.151

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.178 + 1.44\sqrt{\frac{0.178*0.822}{421}} = 0.205

The 85% onfidence interval for the population proportion of new car buyers who prefer foreign cars over domestic cars is (0.151, 0.205).

8 0
2 years ago
Guys help.. this is overdue..
loris [4]
So if his homework takes 25 minutes , and his math takes m minutes , and then as a while it takes h minutes, here’s an example of two equations you can use ;
M+25= h of 25+m=h you can do either one as you please because it doesn’t matter the order as long as they
Both equal h !! Hope this helps , sorry that it’s overdue :( have a great day:))))
4 0
3 years ago
Read 2 more answers
Simplify 1-5/4(6t-3/4)+3(17-5/17)
Firlakuza [10]
-15t/2 + 14159/272

I'm not exactly sure what you are looking for, but this is what I got.
8 0
3 years ago
The diameter of the circle above is 94 cm. what is the circumference of the circle? (use = 3.14.)
Anon25 [30]
To find the circumference, you multiply the diameter by pi (3.14).

94 * 3.14 = 295.16

Hope this helps!
5 0
3 years ago
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