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3 years ago

How many solutions are there to this system of equations? y = 2x - 1 y = 2x + 1

Mathematics

1 answer:

Pavlova-9 [17]3 years ago

3 0

Answer:

They are 5 I think

Step-by-step explanation:

It should be correct

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Factor each expression completely6x^2+x-2

Citrus2011 [14]

$6x^2+x-2$

first , set the function equal to zero

$6x^2+x-2=0$

now we can use this expression to factor

$x=\frac{-b\pm\sqrt[]{b^2-4ac}}{2a}$

where a is 6, b is 1 and c -2

so, replacing

$\begin{gathered} \frac{-(1)\pm\sqrt[]{1^2-4(6)(-2)}}{2(6)} \\ \\ \frac{-1\pm\sqrt[]{1+48}}{12} \\ \\ \frac{-1\pm\sqrt[]{49}}{12} \\ \\ x=\frac{-1\pm7}{12} \end{gathered}$

x has two values

$x_1=\frac{-1+7}{12}=\frac{1}{2}$ $x_2=\frac{-1-7}{12}=-\frac{2}{3}$

we have the two roots now we chang the sign and make the factor expression

$(x-\frac{1}{2})(x+\frac{2}{3})$

8 0

1 year ago

Need Help Please I'm Out Of Time ;(

STatiana [176]

Answer:

last three questions are statistical question

5 0

2 years ago

Which domain of the function y=2^x-6

Roman55 [17]

The domain is 2x and the range is -6

8 0

2 years ago

What is the value of h?

emmainna [20.7K]

The angle on one side of a straight line is 180°, so 40° + 60° + h = 180°.
If you rearrange this you will get h = 180° - 60° - 40°, this will give you: h = 80°.
Hope this helps

5 0

2 years ago

Only answer if you know! no spams :)

artcher [175]

Answer:

The correct answer is C.

Step-by-step explanation:

There are 8 slots on Spinner B.

3 of those slots have squares.

Hence out of all the slots, 3/8 of them have squares.

Hope this helps:) Goodluck!

5 0

2 years ago

Read 2 more answers