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3 years ago

4x 2.8y 2x 2.2y 5x simplified

Mathematics

1 answer:

OverLord2011 [107]3 years ago

5 0

The answer is x=-0.4545454545y

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Determine whether the equation is always, sometimes, or never true. 2/3 x + 4 = 2x

Anarel [89]

Answer:

Always true

Step-by-step explanation:

Given

$\frac{2}{3}x + 4 = 2x$

Required

Determine its type of solution

$\frac{2}{3}x + 4 = 2x$

Collect Like Terms

$2x - \frac{2}{3}x = 4$

Take LCM

$\frac{6x - 2x}{3} = 4$

$\frac{4x}{3} = 4$

Multiply both sides by $\frac{3}{4}$

$\frac{4x}{3} * \frac{3}{4}= 4 * \frac{3}{4}$

$x = 4 * \frac{3}{4}$

$x = 3$

Hence, the equation is always true for x = 3

8 0

3 years ago

Need some help: Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.

MA_775_DIABLO [31]

Answer:

Step-by-step explanation:

Abac

5 0

4 years ago

What is the solution to -x2 + 5x - 3

CaHeK987 [17]

The solution to the equation is $x=\frac{5-\sqrt{13}}{2}$ and $x=\frac{5+\sqrt{13}}{2}$

Explanation:

Given that the equation is $-x^2+5x-3=0$

We need to determine the solution of the equation.

The solution of the equation can be determined using the quadratic formula.

The quadratic formula is given by

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

Hence, from the equation, we have,

$a=-1,\:b=5,\:c=-3$

Substituting these values in the quadratic formula, we get,

$x=\frac{-5\pm \sqrt{5^2-4\left(-1\right)\left(-3\right)}}{2\left(-1\right)}$

Simplifying, we get,

$x=\frac{-5\pm \sqrt{25-12}}{-2}$

Simplifying the terms within the root, we get,

$x=\frac{-5\pm \sqrt{13}}{-2}$

Thus, the roots of the equation are $x=\frac{-5+ \sqrt{13}}{-2}$ and $x=\frac{-5- \sqrt{13}}{-2}$

Taking out the negative sign, we get,

$x=\frac{-(5- \sqrt{13})}{-2}$ and $x=\frac{-(5+ \sqrt{13})}{-2}$

Cancelling the negative sign, we get,

$x=\frac{5-\sqrt{13}}{2}$ and $x=\frac{5+\sqrt{13}}{2}$

Thus, the solutions of the equation are $x=\frac{5-\sqrt{13}}{2}$ and $x=\frac{5+\sqrt{13}}{2}$

7 0

4 years ago

Help........................

MrRissso [65]

since the powers are same, ignore 'em , and let's calculate the bases.

-16.(1/2)

-8.1 (upon cancellation)

ans = -8

hope it helps...!!!

5 0

3 years ago

Simplify the fraction. 5/9-(1/2*15/9) optiona -- 1/9 1/3 2/9 2/3

Citrus2011 [14]

Answer:

interpretation: -- 1/9 1/3 2/9 2/3

Input:

-(-1)/9×1/3×2/(9 + 2/3)

Exact result:

2/261

8 0

4 years ago