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vodka [1.7K]
2 years ago
13

A line has this equation: -5y = 4x+40

Mathematics
1 answer:
lutik1710 [3]2 years ago
3 0

Answer:

The equation of the second line is;

y = 4x - 27

Step-by-step explanation:

Firstly, we need the slope of the first line

To get the slope, we need the equation in the general form of ;

y = mx + c

where m is the slope of the line

Thus, we have in this case, to divide through by -5

That will give the slope value as -5/20 = -1/4

If two lines are perpendicular, the product of their slopes is -1

The slope of the line we want to calculate, let us call it m

m * -1/4 = -1

-m = -4

m = 4

So we want to write the equation of a line with slope 4 and point (8,5)

We proceed to use the point-slope form

That will be;

y-y1 = m(x-x1)

y-5 = 4(x-8)

y-5 = 4x-32

y = 4x -32 + 5

y = 4x -27

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The two triangles are similar what is the value of x? <br> x=___
Dennis_Churaev [7]

Answer:

5

Step-by-step explanation:

What we have to know is that when two triangles are similar their sides will always be proportional. So we will create a proportion that goes like this...\frac{\Delta1side}{\Delta1base} =\frac{\Delta2side}{\Delta2base} but since it doesn't tell us the exact value of triangle 1. We will have to add 3 and 12 to get 15 which is the base of the first triangle. Now we're ready to write the proportion.

\frac{4x}{15}=\frac{3x+1}{12}

Now we cross multiply and solve the equation...

48x=15(3x+1)\\48x=45x+15\\3x=15\\x=5

So the value of x is 5.

7 0
3 years ago
Suppose a movie theater sold 200 adult and student tickets for a showing with a revenue of $980. If the adult tickets were $6.50
frosja888 [35]

Answer:

Adult - 40

Student - 160

Step-by-step explanation:

4 0
3 years ago
What is the midpoint of ab with endpoints A(3,2) and B (8,14
Goryan [66]

Answer:

( \frac{11}{2}, 8)

Step-by-step explanation:

Find the midpoint using the midpoint formula

midpoint = [ \frac{1}{2}(3 + 8), \frac{1}{2}(2 + 14)] = ( \frac{11}{2}, 8)


8 0
3 years ago
Read 2 more answers
Find the measure of a positive angle coterminal with - 240°.
Irina18 [472]
-240+360=120
The answer is 120 degrees.
5 0
3 years ago
Sanjay had a case of 24 bottles of water. In the first week Sanjay drank 3/8 of the bottles of water. In the second week Sanjay
Gnom [1K]

Answer:

The answer to your question is: 5 bottles

Step-by-step explanation:

Process

First week

Divide 24 by 8

                        24/8 = 3 bottles = 1/8

                        but Sanjay drank 3/8 = 9 bottles

And there are 24 - 9 bottles left = 15

- Second week

Divide 15 by 3

                       15/3 = 5 then 5 bottles = 1/3

                       but sanjay drank 2/3 = 10 bottles

Then, there are 15 - 10 bottles left  = 5

                         

8 0
3 years ago
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