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juin [17]
3 years ago
11

Find the slope of a line through the following pair of points:

Mathematics
1 answer:
Zinaida [17]3 years ago
6 0
No slope i believe. good luck!
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What is the radius of a circle whose equation is x2 + y2 + 8x – 6y + 21 = 0?
s344n2d4d5 [400]

Answer:

2 units

Step-by-step explanation:

The given equation of the circle is:

x^{2} + y^{2}+8x-6y+21=0

The general equation of the circle is:

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Comparing the given equation with the general equation we can say:

g = 4

f = -3

c = 21

The formula for radius of the circle is:

radius=\sqrt{g^{2} +f^{2} -c }

Using these values of the given circle, we get:

radius=\sqrt{(4)^{2}+(-3)^{2}-21}\\\\radius=\sqrt{4}\\\\radius=2

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3 years ago
Simplyfy 3^0+4x2-5Captionless Image
larisa [96]

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Step-by-step explanation:

First, evaluate the exponent you'll get, 3^{0}+ 4x² -5 then evaluate to get, 1+ 4x² -5. Next, subtract the numbers, 1 + 4x² -5 then to get, -4 +4x². Lastly, rearrange the terms,  -4 +4x² turns into, 4x² -4!

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The length of a rectangle is 4 inches longer than it is wide. If the area is 60 square inches, what are the dimensions of the re
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Step-by-step explanation:

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3 years ago
What number is equivalent to the fraction 8/9?
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Answer:

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Step-by-step explanation:

Convert to decimal, and convert decimal to percentage.

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