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4 years ago

2(4x – 3) ≥ –3(3x) + 5x?

1 answer:

8 0

Treat the 'more than or equal to' sign as a '=' then work it out like an ordinary algebraic equation.
2(4x-3) = -3(3x)+5x
8x-6 = -9x+5x
-6 = -9x+5x-8x
-6 = -12x
-6/-12 = x
1/2 = x
Then swap the '=' back for the other sign. This works for all of the '<' type signs

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PLEASE HELP! Solve each of the following by using the general quadratic formula.

Archy [21]

Using the quadratic formula, the solutions are:

a) $x = \frac{3 \pm \sqrt{41}}{4}$

b) $x = 1 \pm 2i$

<h3>What is a quadratic function?</h3>

A quadratic function is given according to the following rule:

$y = ax^2 + bx + c$

The solutions are:

$x_1 = \frac{-b + \sqrt{\Delta}}{2a}$

$x_2 = \frac{-b - \sqrt{\Delta}}{2a}$

In which:

$\Delta = b^2 - 4ac$

Item a:

The coefficients are a = 2, b = -3, c = -4, hence:

$\Delta = (-3)^2 - 4(2)(-4) = 41$

$x_1 = \frac{3 + \sqrt{41}}{4}$

$x_2 = \frac{3 - \sqrt{41}}{4}$

Item b:

The coefficients are a = 1, b = 2, c = 2, hence:

$\Delta = (2)^2 - 4(1)(2) = -4$

$x_1 = \frac{2 + \sqrt{-4}}{2} = 1 + 2i$

$x_2 = \frac{2 - \sqrt{-4}}{2} = 1 - 2i$

More can be learned about quadratic equations at brainly.com/question/24737967

#SPJ1

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2 years ago

Please Help! I will award Best Brainly Answer as well as 15 points

Llana [10]

ITS IS 8x-7y-5z=15 I THINK'

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3 years ago

miss. Nikkel want to divide her class of 23 students into 4 equal teams.is this reasonable?why or why not

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Hope this helped! ☺♥

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