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IgorC [24]
3 years ago
8

Consider a circle whose equation is x2 + y2 – 2x – 8 = 0. Which statements are true? Select three options.

Mathematics
2 answers:
Kryger [21]3 years ago
8 0

Answer:

The first, second, and fifth statements are correct.

Step-by-step explanation:

We are given a circle with the equation:

x^2+y^2-2x-8=0

And we want to select the statements that are true.

First, we can convert the equation into standard form. We can group each variable:

(x^2-2x)+(y^2)=8

And complete the square for the first term:

(x^2-2x+1)+(y^2)=8+1

Factor and simplify:

(x-1)^2+y^2=9

We can rewrite our equation as:

(x-(1))^2+(y-(0))^2=(3)^2

So, this tells us that we have a circle centered on (1, 0) with a radius of 3 units.

In this case, the first statement, second statement (the point (1,0) is on the x-axis), and fifth statements are correct (the square root of 9 is also 3).

Tcecarenko [31]3 years ago
5 0

Answer:

The first, second, and fifth statements are correct.

Step-by-step explanation:

i got it right on edg if right mark as brainliest

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Solving an expression:

2 - (10 + 5)

A simply expression. After doing the math the answer comes out as -3.

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This is an algebraic expression. This means we have variables like x and y.
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Because they are like terms (which means they have the variable) we can add them to together.

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I hope this answer clears up any misunderstandings about expressions and over all helped you learn something! If you still need some help, don't hesitate to DM on Brainly! I wish you best of luck on your journey of math!

EDIT:

Now what if you have an expression like this:

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In mathematics, something like 5x is the same difference as 5 * x.
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5(4) + 5(8)

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5(4) + 5(8) = 20 + 40 = 60

Our answer is 60.
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