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LuckyWell [14K]
2 years ago
10

What is the slope of the line perpendicular to the line that passes through (4,7) and (8,9)?

Mathematics
2 answers:
melamori03 [73]2 years ago
5 0

Answer:

-2

Step-by-step explanation:

the line that passes trough (4, 7) and (8, 9) has the slope

m= (y2-y1)/ (x2-x1) = 7-9 / 4-8 = -2/ -4 = 1/2

perpendicular lines have their slope negative reciprocal

m= -2 is the slope of the perpendicular line that goes trough the given points

Strike441 [17]2 years ago
4 0
Ima try and find it for you
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The answer to your problem is x=4

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<u>Multiply both sides by 4/(-5)</u>

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The circumference of a circle is 6.28. What is the area of the circle.
Rom4ik [11]
Hello there! Thank you for asking your question here at Brainly. I will be assisting you today with how to handle this problem, and will teach you how to handle it on your own in the future.

First, let's evaluate the question.
"The circumference of a circle is 6.28. What is the area of a circle?"

Now, let's remember the different formulas for area and circumference.
The circumference is "2•3.14•r", while the area is "3.14•r•r".

We have our circumference, 6.28.
However, we are looking for the area. Since we have the circumference, we need to narrow down to the radius (so we can solve for the area).
Let's set this up as an equation;
C = 2 • 3.14 • r
Plug in the value for our circumference.
6.28 = 2 • 3.14 • r
Multiply 2 by 3.14 and r to simplify the right side of the equation.
2 • 3.14 • r = 6.28 • r = 6.28r

We're now left with:
6.28 = 6.28r
Divide both sides by 6.28 to solve for r.
6.28 / 6.28 = 1
6.28r / 6.28 = r

We are now left with the radius:
R = 1.

Now, we can solve for the area.
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Your area is 3.14 units^2.

I hope this helps, and has prepared you for your future problems in relation to this topic!
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