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3 years ago

What is 3(2x-4)=5x+2

1 answer:

6 0

First we distribute 3 into 2x and -4.

3 x 2x = 6x
3 x -4 = -12

That will make the left side of the equation:

6x - 12 = 5x + 2

Now we subtract 5x on both sides of the equation.

x - 12 = 2

Finally we add 12 on both sides of the equation.

x = 14 is the answer

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Using the quadratic formula to solve 2x2 = 4x – 7, what are the values of x? 2 plus-or-minus StartRoot 10 EndRoot i 1 plus-or-mi

ioda

Answer:

$x = 1 +/- \frac{i\sqrt{10} }{2}$

Step-by-step explanation:

The equation given is:

$2x^2 = 4x - 7\\\\2x^2 - 4x + 7 = 0$

Using quadratic formula:

$x = \frac{-b +/- \sqrt{b^2 - 4ac} }{2a}$

From the question:

a = 2, b = -4, c = 7

Therefore:

$x = \frac{4 +/- \sqrt{(-4)^2 - 4 * 2 * 7} }{2 * 2}\\\\x = \frac{4 +/- \sqrt{(16 - 56)} }{4}\\\\x = \frac{4 +/- \sqrt{-40} }{4}\\$

=> $x = 1 +/- \frac{i\sqrt{10} }{2}$

7 0

3 years ago

Read 2 more answers

Write an exponential expression: choose an odd number between

Ronch [10]

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4 0

3 years ago

Read 2 more answers

Can some one plz help me?

Anna11 [10]

You are multiplying the numbers by 8 so it would most likely be patrick

4 0

3 years ago

Can someone please help me!!

Elan Coil [88]

Answer:

Step-by-step explanation:

Firstly we would start off by simplifying the equation by doing the order of operations backward (PEMDAS -> SADMEP) and multiply -4 and -3 which would equal a positive 12

Next, we would divide 12 and -6 and get a negative 2

Finally, we would have the equation 1 - 12 + (-2)

We would solve the equation to get -13/(-1)³

This would make the -13 into a positive since any number over one is a whole number. -13 is getting divided by (-1) 3 times so it converts to a positive, then a negative, then back to a positive.

I hope this helped :3

6 0

3 years ago

How many 30 degrees angles in a circle

jasenka [17]

ANSWER:

Step-by-step explanation:

360/30=12

3 0

2 years ago