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natta225 [31]
2 years ago
7

Im doing an extra credit assignment and I need someone to help me solve by substitution method

Mathematics
1 answer:
AnnyKZ [126]2 years ago
6 0

Answer:

(-2,1)

Step-by-step explanation:

that is where the two graphs intersect

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3 years ago
Which are the solutions of x2 = –7x – 8?
vovangra [49]

Answer:

The solutions are:

x_1=\frac{-7+\sqrt{17}}{2}     x_2=\frac{-7-\sqrt{17}}{2}

Step-by-step explanation:

We have the following quadratic equation

x^2 = -7x - 8

We can rewrite the equation as follows

x^2+7x + 8=0

Now we use the quadratic formula to solve the equation

For an equation of the form ax ^ 2 + bx + c = 0 the quadratic formula is:

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In this case:

a=1,\ b=7,\ c=8

Then:

x=\frac{-7\±\sqrt{7^2-4(1)(8)}}{2(1)}

x=\frac{-7\±\sqrt{49-32}}{2}

x=\frac{-7\±\sqrt{17}}{2}

x_1=\frac{-7+\sqrt{17}}{2}

x_2=\frac{-7-\sqrt{17}}{2}

7 0
3 years ago
Read 2 more answers
F(x) = 9x^3 + 2x^2 - 5x + 4 and g(x) = 5x^3 - 7x + 4. What is f(x) - g(x)?
sasho [114]
F(x)= 9x^3 + 2x^2 - 5x + 4 
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Ludmilka [50]

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Step-by-step explanation:

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zimovet [89]
The parabola opens towards left, this means the squared term is y with negative coefficient.

The vertex is given to be the point (-1,-3). So, the general equation of the parabola will be like:

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