Pizza prices by city (Data in Pizza prices) The company that sells frozen pizza to stores in four markets in the United States (
1 answer:
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ANSWER
The radius is 8
EXPLANATION
We were given,
We rewrite the above equation to obtain,
We now add half the square of the coefficient of
to both sides of the equation to get,
We now got two perfect squares on the left hand side of the equation,
By comparing to the general formula of the circle,
We can see that the radius is 8.
The radius is 8
EXPLANATION
We were given,
We rewrite the above equation to obtain,
We now add half the square of the coefficient of
to both sides of the equation to get,
We now got two perfect squares on the left hand side of the equation,
By comparing to the general formula of the circle,
We can see that the radius is 8.
Answer:
(7, -3)
Step-by-step explanation:
Add the two equations to eliminate x:
7y = -21
Then solve 7y = −21 for y:
=
(<em>Divide both sides by 7)</em>
y = -3
Now that we've found y let's plug it back in to solve for x.
Write down an original equation:
2y - 3x = -27
Substitute -3 for y in 3y - 3x = -27:
(2)(-3) - 3x = -27
-3x - 6 = -27 (<em>Simplify both sides of the equation</em>)
-3x - 6x + 6x = -27 + 6 (<em>Add 6 to both sides</em>)
-3x = -21
=
(<em>Divide both sides by -3</em>)
x = 7