4 years ago

Solve the system of equations –4x – 4y = -8 and 3x + 7y = –18 by combining the equations.

Mathematics

1 answer:

shepuryov [24]4 years ago

5 0

Answer:6 im not to sure

Step-by-step explanation:

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60 PTS WILL MARK BRAINLIEST IF CORRECT {see image}

xxMikexx [17]

Answer:

f(x) =x

Step-by-step explanation:

f(x) = -3x+2

This is a line so the parent function must be a line

That eliminates a which is a cubic function and d which is a absolute value functions

[x] means greatest integer which is not what the type of graph we are making

The parent function is x

3 0

3 years ago

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find the smallest number by which 368 be multiplied so that the product is a perfect square find the square root of the new squa

Vikki [24]

Answer:

Step-by-step explanation:

368×0=0

Now,

√0=0

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3 years ago

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Use the parabola tool to graph the quadratic function f(x)=−5x2−2.

alexira [117]

$\text{Consider the quadratic function}\\
\\
f(x)=-5x^2-2\\
\\
\text{For a quadratic equation, }f(x)=ax^2+bx+c, \text{ we know that the x-coordinate}\\
\text{of the vertex (h,k) is given by}\\
\\
h=\frac{-b}{2a}\\
\\
\text{on comparing the given equation with standard equation, we have}$

$a=-5, b=0, c=-2\\
\\
\text{so the x-coordinate of the vertex is }\\
\\
h=-\frac{b}{2a}=-\frac{0}{2(-5)}=0\\
\\
\text{so plug this vlaue of the h in the given function to get the y-coordinate}\\
\text{of the vertex. so}\\
\\
f(x)=-5(0)^2-2=0-2=-2\\
\\
\text{hence the vertex of the parabola is: }(h,k)=(0,\ -2)\\
\\
\text{A second point on the graph can be found by putting x=1, so }\\
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f(1)=-5(1)^2-2=-5-2=-7\\
\\
\text{so one other point on the parabola is }(1,-7)$