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3 years ago

What is the slope of the line represented by the equation 3x + 4y 12?

Mathematics

2 answers:

Strike441 [17]3 years ago

6 0

Answer:

Are you looking for coordinates or a equation?

Step-by-step explanation:

goblinko [34]3 years ago

6 0

Answer:

y=-3/4x+3

Step-by-step explanation:

3x+4y=12

-3. -3

4y=-3x+12 (I put the 3x first just so that it is already in slope intercept form)

4y/4=-3x/4+12/4

y=-3/4x+3

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A triangle has sides with lengths of 5x – 7,

Tom [10]

Answer:

10x - 17

Step-by-step explanation:

Perimeter is the sum of all sides

5x - 7 + (3x - 4) + (2x - 6)

10x - 7 - 4 - 6

10x - 17

4 0

3 years ago

Verify that the roots of 5x²- 6x -2 = 0 are <img src="https://tex.z-dn.net/?f=%5Cfrac%7B3%20%2B%20%5Csqrt%7B19%7D%20%7D%7B5%7D%2

Mice21 [21]

Answer:

Proof below.

Step-by-step explanation:

Quadratic Formula

$x=\dfrac{-b \pm \sqrt{b^2-4ac} }{2a}\quad\textsf{when }\:ax^2+bx+c=0$

Given quadratic equation:

$5x^2-6x-2=0$

Define the variables:

a = 5
b = -6
c = -2

Substitute the defined variables into the quadratic formula and solve for x:

$\implies x=\dfrac{-(-6) \pm \sqrt{(-6)^2-4(5)(-2)}}{2(5)}$

$\implies x=\dfrac{6 \pm \sqrt{36+40}}{10}$

$\implies x=\dfrac{6 \pm \sqrt{76}}{10}$

$\implies x=\dfrac{6 \pm \sqrt{4 \cdot 19}}{10}$

$\implies x=\dfrac{6 \pm \sqrt{4}\sqrt{19}}{10}$

$\implies x=\dfrac{6 \pm2\sqrt{19}}{10}$

$\implies x=\dfrac{3 \pm \sqrt{19}}{5}$

Therefore, the exact solutions to the given quadratic equation are:

$x=\dfrac{3 + \sqrt{19}}{5} \:\textsf{ and }\:x=\dfrac{3 - \sqrt{19}}{5}$

Learn more about the quadratic formula here:

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3 0

2 years ago

Read 2 more answers

I put this into my calculator but it keeps coming out as "error" :/ not sure if it's just my calculator or something with the pr

Triss [41]

Your calculator says error because you cant have a square root of a negative number because there is no solution to that maybe recheck your equation and try again

8 0

3 years ago

Please I need help!

Yanka [14]

Answer:

Step-by-step explanation:

The answer is 1092m

6 0

3 years ago

Simplify expression 8x-6+x-1

charle [14.2K]

Answer:

9x -7

Step-by-step explanation:

8x-6+x-1

Combine like terms

8x +x -6-1

9x -7

8 0

3 years ago