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olasank [31]
3 years ago
8

Number 3 please solve and explain

Mathematics
1 answer:
allochka39001 [22]3 years ago
8 0

Answer: -12.5

Step-by-step explanation:

x(2y-3) and x=2.5 and y=-1

so you fix in the figures so it will turn to

2.5(-2-3)

so then you open the brackets with 2.5

-5-7.5

Answer: -12.5

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Write an equation for a circle with a diameter that has endpoints at (–10, 1) and (–8, 5). Round to the nearest tenth if necessa
satela [25.4K]

The standard form for the equation of a circle is :

<span><span><span> (x−h)^</span>2</span>+<span><span>(y−k)^</span>2</span>=<span>r2</span></span><span> ----------- EQ(1)
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 So the midpoint of the diameter with endpoints at (−10,1)and(−8,5) is :

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 So the point (−9,3) is the center of the circle.

  Now, use the distance formula to find the radius of the circle:

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7 0
3 years ago
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5 0
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Mkey [24]

Answer:

x = 78º

y = 35º

Step-by-step explanation:

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-----------------------------

x + 51 + 51 = 180

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2y = 70

y = 35º

3 0
2 years ago
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