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3 years ago

What is the slope of the line that passes through ( 1, -19 ) and ( -2,-7

Mathematics

1 answer:

Lapatulllka [165]3 years ago

3 0

Answer:

-4

Step-by-step explanation:

We can find the slope when given two points by using the following

m = (y2-y1)/(x2-x1)

= (-7--19)/(-2 -1)

= (-7+19)/(-2-1)

= 12/-3

=-4

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What is 3.33333333333 as a whole number?

sattari [20]

3.33333333 as a whole number is 3

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3 years ago

Which number is rational?<br> -2.101001001<br> -.8974512<br> 1.2547569<br> 5.3333333

LenKa [72]

Answer:

Step-by-step explanation:

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8 0

3 years ago

Which of these two expressions represent the phrase "five plus two times a number"? A. 5n+2n and 2n+5n B. 5+2n and 2+5n C. 2n+5

Allushta [10]

Answer:

It would be D because you are timing 2 by a number which would have n together

Hope this helped

3 0

3 years ago

6. The mean number of hours of flying time for pilots at Continental Airlines is 37 hours per month (The Wall Street Journal, Fe

SashulF [63]

Answer:

The marginal error is 2.355

Confidence interval is $(34.645,\ 39.355)$

The LB and UB are 34.645 and 39.3555 respectively.

Step-by-step explanation:

Consider the provided information.

n = 49, s = 8.2 c = 95%and $\bar x=37$

Degree of freedom is: n-1 = 49-1 = 48.

$\alpha =\frac{1-c}{2}= \frac{1-0.95}{2}\\\alpha = \frac{0.05}{2}= 0.025$

From the table $t_{\alpha /2}=2.010635$

Marginal error is:

$E=t_{\alpha /2}\times \frac{s}{\sqrt{n}}$

$E=2.0106\times \frac{8.2}{\sqrt{49}}$

$E=2.0106\times \frac{8.2}{7}$

$E=2.0106\times 1.171$

$E=2.355$

Hence, the marginal error is 2.355.

Part (B)

95% confidence interval estimate

$(\bar x-E,\ \bar x+E)$

$(37-2.355,\ 37+2.355)$

$(34.645,\ 39.355)$

Thus, the LB and UB are 34.645 and 39.3555 respectively.

3 0

3 years ago

A salesman who makes $32,500 a year gets promoted to sales manager, earning a new salary of $43,250. What was the rate of increa

OLEGan [10]

Answer:

33.1%

Step-by-step explanation:

First, calculate the dollar amount of the increase. Subtract $32,500 from $43,250. We get $10,750.

Next, divide this $10,750 by the original salary, $32,500, to determine what fraction of $32,500 is represented by $10,750:

fraction = $10,750/$32.500 = 0.331

Convert this to a percentage by multiplication by 100%: 33.1%

The rate of increase of the saleperson's salary was 33.1%.

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2 years ago