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3 years ago

What is an equation of the line that passes through the points (−4,−2) and (−8,3)?

Mathematics

1 answer:

Vladimir [108]3 years ago

3 0

Answer:

(-2,1)

Step-by-step explanation:

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2 - 3d = 4d - 19<br><br>Answer and show steps

defon

2 - 3d = 4d - 19

Add the opposite to both sides to get the variable on the left side only.

2 - 3d = 4d - 19

-4d -4d

2 - 7d = - 19

Then get the terms w/o variables on the right,

2 - 7d = - 19

-2 -2

-7d = -21

Then divide by the number paired with the variable.

--7d = -21

----- ----- ; d = 3

-7 -7

Final answer = 3

Hope I helped :)

3 0

3 years ago

Solve this system of equations by graphing. First graph the equations, and then type the solution. y=3x–2 y= – x+6 Click to sele

labwork [276]

Answer:

(2 , 4)

Step-by-step explanation:

set 3x-2 = -x + 6

4x = 8

x = 2

3(2) - 2 = 4

5 0

2 years ago

Answer the question below

kodGreya [7K]

Answer:

C or D

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Five students visiting the student health center for a free dental examination during National Dental Hygiene Month were asked h

Andrews [41]

Answer:

[0.9 months, 32.69 months]

Step-by-step explanation:

The mean is

$\bf \bar x=\frac{5+17+12+21+29}{5}=16.8$

The standard deviation is

$\bf s=\sqrt{\frac{(5-16.8)^2+(17-16.8)^2+(12-16.8)^2+(21-16.8)^2+(29-16.8)^2}{5}}=8.1092$

Now, we have to find two values a and b such that the area under the Normal curve with mean 16.8 and standard deviation 8.1092 between a and b equals <em>95% = 0.95 </em>

Using a spreadsheet we find these values are

a = 0.906

b = 32.694

<h3>(See picture) </h3>

and our 95% confidence interval for the mean number of months elapsed since the last visit to a dentist for the population of students participating in the program rounded to two decimal places is

[0.9 months, 32.69 months]