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netineya [11]
3 years ago
14

15.239 rounded to the nearest tenth

Mathematics
2 answers:
alekssr [168]3 years ago
8 0

Answer:

15

Step-by-step explanation:

alina1380 [7]3 years ago
6 0

Answer:

15.2

Step-by-step explanation:

This is because 15.239 their would have to be a 5 instead of a 3 to make it 15.3 so it would have to be 15.2 hope this helps!!!

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A scatter plot was constructed and a line of best fit was drawn, 25x 80. What is the equation of this best line of fit?
Tcecarenko [31]

Answer:

y = 5x + 25

Explaination:

To get the equation of a line, first get the slope of the line.


Slope = (change in y)/(change in x)


          = (60-30)/(7-1)


          = 30/6


            = 5


Now use one point in the line (4,45) and a general point (x,y).


Slope = (change in y)/(change in x)


    5 = (y - 45)/(x - 4)


    5(x - 4) = (y - 45)


  5x - 20 = y - 45


y = 5x -20 + 45





7 0
3 years ago
√6x^2+4x when x=−6. I can't understand this question I really need help it's due in like 2 mins.
VLD [36.1K]

Answer:

Substitute the value of the variable into the equation and simplify.

Exact Form:

36

√

6

−

24

Decimal Form:

64.18163074

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Find the value of x and y in the parallelogram.
enot [183]

Answer:

there is no picture

Step-by-step explanation:

6 0
3 years ago
Find the slope of the line that passes through (8,7) and (5,5)<br>​
Sophie [7]

Answer:

slope= 2/3

Step-by-step explanation:

Slope intercept formula: y2-y1/x2-x1

5-7/5-8 = -2/-3 = 2/3

7 0
2 years ago
A recent survey showed that in a sample of 100 elementary school teachers, 15 were single. In a sample of 180 high school teache
trapecia [35]

Answer:

By using hypothesis test at α = 0.01, we cannot conclude that the proportion of high school teachers who were single greater than the proportion of elementary teachers who were single

Step-by-step explanation:

let p1  be the proportion of elementary teachers who were single

let p2 be the proportion of high school teachers who were single

Then, the null and alternative hypotheses are:

H_{0}: p2=p1

H_{a}: p2>p1

We need to calculate the test statistic of the sample proportion for elementary teachers who were single.

It can be calculated as follows:

\frac{p(s)-p}{\sqrt{\frac{p*(1-p)}{N} } } where

  • p(s) is the sample proportion of high school teachers who were single (\frac{36}{180} =0.2)
  • p is the proportion of elementary teachers who were single (\frac{15}{100} =0.15)
  • N is the sample size (180)

Using the numbers, we get

\frac{0.2-0.15}{\sqrt{\frac{0.15*0.85}{180} } } ≈ 1.88

Using z-table, corresponding  P-Value is ≈0.03

Since 0.03>0.01 we fail to reject the null hypothesis. (The result is not significant at α = 0.01)

8 0
3 years ago
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