Answer:
The center of this circle is at
. The radius of this circle is
.
Step-by-step explanation:
A circle with center
and a radius of
(
) could be expressed as:
.
(In other words, a point is on this circle if and only if the distance between that point and the center is equal to the radius.)
Rearrange this equation using binomial expansion to match the equation given in this question:
.
.
The equation in this question is:
.
Match up the coefficients of
and
in the two equations.:
- Coefficient of
:
. - Coefficient of
:
.
Thus,
and
.
The constants of the two equations should also match up:
.
Substitute in
as well as
and solve for
:
.
(since
.)
Therefore, the center of this circle is
. The radius of this circle is
.
The equation of the line that passes through (4,-1) and (-2,3) is y=-2/3x+5/3. You have to use two points to find the equation. Use the formula y=mx+b to solve.
F(c)Have the greatest maximum
Answer:
?
Step-by-step explanation:
what is the question
Number of questions worth 5 points = 10
Number of questions worth 2 points = 25
Further explanation:
The given system is a system of linear equations in two variables.
We will use the subsitution method to solve the system
Given equations are:

From equation no 1:

Putting x=35-y in second equation

Hence,
Number of questions worth 5 points = 10
Number of questions worth 2 points = 25
Keywords: Linear Equations, Substitution method
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