Answer:
(4,-6)
Step-by-step explanation:
2x + 2y = -20
x + y = -10
y = -x-10
5x-5y = -10
x-y=-2
x-(-x-10) = -2
2x-10 = -2
2x= 8
x = 4
4 + y = -10
y = -6
The domain of the function is the set of all real numbers and the range of the function is the set of all values greater than -2
<h3>How to determine the domain and the range?</h3>
The function is given as:
f(x) = 2(x -4)^2 - 2
A quadratic function can take any real number as its input.
So, the domain of the function is the set of all real numbers
The vertex of the above function is:
Vertex = (4, -2)
And the leading coefficient is:
a = 2
The y value of the vertex is;
y = -2
Because the value of a is positive, then the vertex is a minimum.
This means that the range of the function is the set of all values greater than -2
Read more about domain and range at:
brainly.com/question/10197594
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Answer:
8.0<x<8.5
Step-by-step explanation:
It might be 3/4, 6/5, 9/6, 12/7, 15/8
I got 64 square feet.
My work is shown in the image.
For possible questions:
1: you can find x+7 and x-2 because the sides of the square can be measured as x, and x+7 means 7 more than the original; x-2 means 2 less than the original.
2: solved via factoring. Not sure if you've learned it or not.
3: reject the negative numbers because you can't have negative sides in a square.
