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Bas_tet [7]
3 years ago
9

Please solve with explanation 20 points

Mathematics
1 answer:
Zielflug [23.3K]3 years ago
4 0

Answer:

Below.

Step-by-step explanation:

a. As the circumcentre is (0,0) and one point on the circle is (10,0) the radius is 10.

The circle has equation:

x^2 + y^2 = 10^2  

x^2 + y^2 = 100.

b. (-5, k)  is a point on the circle, so

(-5)^2 + k^2 = 100

k^2 = 100 - 25 = 75

So k =  √75

k = 5√3 or 8.66 to 2 places of decimals.

c. The lengths of the 3 sides of the triangles are 10, 10 and 15.8 so it is isosceles.

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If 4 - 7x = 39 then what is the value of x + 1
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4-7x=39
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4 years ago
What is the value of a^3, if a =7
alekssr [168]
Ok so remember
x^n means x times itself n times
example
x^2=x times x
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8 0
3 years ago
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den301095 [7]

Answer:

29. p=8.6

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Step-by-step explanation:

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