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2 years ago

Find the midpoint of AB A B . Question 5 options: (4, 4) (1, 1) (3, 1) (10, 4)

Mathematics

1 answer:

zaharov [31]2 years ago

3 0

A (-2, 0)

B (4, 2)

so mid point (x,y) of 2 coordinates(x1,y1) and (x2,y2) is given as

(x,y) = ( (x1+x2)/2 , (y1+y2)/2)

= ( (-2+4)/2, (0+2)/2)

= (2/2, 2/2)

= (1, 1)

so your answer is (1,1) that is option 2

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Consuela earns a salary of 40000$ per year plus commission of 1000$ for each car she sells. Write and solve an equation that sho

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3 years ago

Pennsylvania Refining Company is studying the relationship between the pump price of gasoline and the number of gallons sold. Fo

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Complete Question

Pennsylvania Refining Company is studying the relationship between the pump price of gasoline and the number of gallons sold. For a sample of 14 stations last Tuesday, the correlation was 0.65.At the 0.01 significance level Can the company conclude that the correlation is positive

Answer:

Yes the company conclude that the correlation is positive

Step-by-step explanation:

From the question we are told that

The sample size is n = 14

The correlation is r = 0.65

The null hypothesis is $H_o : r < 0$

The alternative hypothesis is $H_1 : r > 0$

Generally the standard deviation is mathematically evaluated as

$Sr = \sqrt{1- r}$

$Sr = \sqrt{1- 0.65}$

$Sr = 0.616$

The degree of freedom for the one-tail test is

$df = n- 2$

$df = 14- 2$

$df = 12$

The standard error is evaluated as

$SE = \frac{0.616}{ \sqrt{12} }$

$SE =0.1779$

The test statistics is evaluated as

$t = \frac{r }{SE}$

$t = \frac{0.65 }{0.1779}$

$t = 3.654$

The p-value of of t is obtained from the z table, the value is

$p-value = P(t < 3.654) = 0.00012909$

Given that $p-value < \alpha$ then we reject the null hypothesis

Hence the company can conclude that the correlation is positive

6 0

3 years ago

Please help on this, this is on delta math btw but pleaseeee help

blagie [28]

Answer:

c = 2

Step-by-step explanation:

6 = 6c-6

+6 +6

12 = 6c

12 / 6 = 2

3 0

2 years ago

Which equation is satisfied by all of the plotted points?

Black_prince [1.1K]

I think the correct answer from the choices listed above is option D. The equation that would satisfy all of the points plotted above would be y=-2x. From the plot, we can see that the y-intercept is equal to zero and by using two points we can calculate the slope to be equal to -2. Giving an equation which is y=-2x.

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3 years ago

Read 2 more answers

Help lol I need to know

masha68 [24]

it equals 25 cause its bending

5 0

2 years ago