The graph shows two lines, A and B.

A line segment is formed by connecting two points located at (-4,2) and (2,-1). What is the slope of this line segment? A.-3/8 B

Scorpion4ik [409]

The formula for slope is
m= (y₂-y₁)/(x₂-x₁)
you can plug in the points that you are given to find the slope
m= (-1-2)/(2-(-4)
m= -3/6

the slope is -3/6 which reduced to -1/2

so the answer would be
c) -1/2

hope this helped!

3 0

3 years ago

An automobile manufacturer has given its van a 31.3 miles/gallon (MPG) rating. An independent testing firm has been contracted t

Fynjy0 [20]

Answer:

$z=\frac{31.1-31.3}{\frac{1.3}{\sqrt{140}}}=-1.82$

The p value for this case would be given by:

$p_v =2*P(z$

For this case since the p value is higher than the significance level we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true mean is not significantly different from 31.3 MPG

Step-by-step explanation:

Information given

$\bar X=31.1$ represent the sample mean

$\sigma=1.3$ represent the population standard deviation

$n=140$ sample size

$\mu_o =31.3$ represent the value that we want to test

$\alpha=0.02$ represent the significance level for the hypothesis test.

z would represent the statistic

$p_v$ represent the p value

Hypothesis to test

We want to test if the true mean is equal to 31.3 MPG, the system of hypothesis would be:

Null hypothesis: $\mu =31.3$

Alternative hypothesis: $\mu \neq 31.3$

Since we know the population deviation, the statistic is given by

$z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}}$ (1)

Replacing we got:

$z=\frac{31.1-31.3}{\frac{1.3}{\sqrt{140}}}=-1.82$

The p value for this case would be given by:

$p_v =2*P(z$

For this case since the p value is higher than the significance level we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true mean is not significantly different from 31.3 MPG

4 0

3 years ago

2) 0.6148.24 3 I really need help y’all its really hard

BartSMP [9]

Answer:

0.012

Step-by-step explanation:

0.6/48.24

1. multiply numerator and denominator by 100 to get 60/4824

2. divide 60 by 4824

3. you get 0.012

( i would've written out how to get that answer but there are about 10 steps and it's really hard to type them out)

6 0

2 years ago

The formula of the area of annulus correct to one decimal place

S_A_V [24]

Answer:

Step-by-step explanation:

It’s 4

7 0

3 years ago

Read 2 more answers

Please help me. Disclaimer: don't do it for points

Mnenie [13.5K]

Answer:

1. 1.50

2. .75

3. 1.32

4. 3.06

5. 4cm

6. .75

7. 2.75

8. 81

9. 3.63

10. 210.25

Step-by-step explanation:

1. 3 times pi equals radius. find radius using circumference. C=9.42.

2. 4.71=2TTr

3. 1.15 x 1.15

4. 1.75 x 1.75

5. 2 x 2

6. 4.7=2TTr

7. 17.28=2TTr

8. 9 x 9

9. 22.77=2TTr

10. 14.5 x 14.5

<h2>Note: These may not be the correct answers but I have tried my best!! :)</h2>

7 0

2 years ago

Read 2 more answers