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2 years ago

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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I need some help with this problem, I am supposed to solve for x

harina [27]

I havnt done that in a while but I think you do x+105=x+95 then you add your like terms which would turn into 10=2x then you divide 10 divided by 2 which is 5, SO YOUR ANSWER IS (I think) 5x

3 0

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:

$x=\frac{-b\±\sqrt{b^2-4ac}}{2a}$

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
g(x)= 5x^3 - 7x + 4

f(x) - g(x)
9x³ + 2x² - 5x + 4 - (5x³ - 7x + 4)
9x³ + 2x² - 5x + 4 - 5x³ +7x - 4
9x³ - 5x³ + 2x² -5x + 7x + 4 - 4
4x³ + 2x² + 2x

5 0

3 years ago

Calculate the average rate of change for the given graph from x = -2 to x = 0

Ludmilka [50]

Answer: x goes from 0 to 2, y changes from 0 to -2

Step-by-step explanation:

7 0

3 years ago

Hey can you please help me posted picture of question

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:

$x=-a(y+1)^{2}-3$

where a is any constant.

In the given options, only 1 such equation is available and that is option C.

So the answer to this question is option C

5 0

3 years ago