AE=18, EC=12, BC=20, what is EC
1 answer:
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To find this out we can set the expressions equal to each other:
Solve for 'x', first distribute:
Subtract 3 to both sides:
Subtract 2x to both sides:
So the answer is yes, after 3 weeks the dogs will be the same weight(because 'x' represents # of weeks).
Solve for 'x', first distribute:
Subtract 3 to both sides:
Subtract 2x to both sides:
So the answer is yes, after 3 weeks the dogs will be the same weight(because 'x' represents # of weeks).
Given quadratic equation : .
A quadratic equation represents a parabola.
We have leading coefficient is -3, a negative number.
So, it would be a downward parabola and it would have it's vertex point on the top on the parabola.
So, it would obviously have a maximum value.
Let us find the x-coordinate of the parabola first and then y-coordinate of the parabola.
x = -b/2a = -12/2(-3) = -12/-6 = 2.
Plugging x=in given equation, we get
y=-3(2)^2+12(2)-33 = -3(4) +24 -33
= -12 +24 -33 = -21.
Therefore, maximum value is -21.
Therefore, correct option is :
<h3>B. The equation has a maximum value with a y-coordinate of -21.</h3>