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4 years ago

What is the solution for x in the equation -4+5x-7=10+3x-2x in a fraction

Mathematics

1 answer:

Alex4 years ago

5 0

Answer:

x = 21/4

Step-by-step explanation:

re-arrange the equation

-4+5x-7-3x = 10-2x (move 3x to the other side)

-4+5x-7-3x+2x = 10 (move 2x to the other side)

5x-7-3x+2x = 10+4 (move 4 to the other side)

5x-3x+2x = 10+4+7 (move 7 to the other side)

4x = 21 (add up both sides)

x = 21/4 (divide both sides by 4

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scoundrel [369]

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4 years ago

Solve the system by the elimination method. -2x + y + 6 = 0 2x + y - 8 = 0 When you eliminate x, what is the resulting equation?

Dmitry [639]

I see you want to solve -2x + y + 6 = 0 2x + y - 8 = 0 simultaneously. Next time, please put each equation on its own line, like this:

-2x + y + 6 = 0

2x + y - 8 = 0

or separate the two equations with "and" or some other symbol.

We can easily eliminate x by adding these 2 equations together:

-2x + y + 6 = 0

2x + y - 8 = 0

-------------------

2y - 2 = 0, which yields y = 1. This is the equation called for in this problem. You were not asked to find x.

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4 years ago

Read 2 more answers

A piece for a board game is shaped like a triangular prism. The piece is 18 millimeters long. The base of the piece is an equila

Bogdan [553]

We can solve for the surface area of the triangular prism using the formula below:
SA=bh + (s1+s2+s3) H
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3 years ago

Select the polynomial that is a perfect square trinomial. 36x2 − 4x 16 16x2 − 8x 36 25x2 9x 4 4x2 20x 25.

Naya [18.7K]

The polynomial a,b,c,are not perfect square polynomial and the polynomial d is perfect square polynomial.

The given polynomial is

$a) 36x^2-4x+16$

What is the form of perfect square polynomial?

$(ax+b)^2$

we solve this method by using perfect square method

add and subtract 1/9

$36x^2-4x+16+\frac{1}{9}-\frac{1}{9}$

factor 36

$\frac{143}{9}+36(x^2-\frac{x}{9}+\frac{1}{324} )$

Now complete the square

$\frac{143}{9}+36(x^2-\frac{1}{18})^2$

Therefore this is not perfect square trinomial.

Similarly for

$b) 16x^2-8x+36$

Complete square is,

$16(x-\frac{1}{4})^2+35$

This polynomial is also not perfect square trinomial.

$c) 25x^2+9x+4\\$

complete square is,

$25(x+\frac{9}{50})^2+\frac{319}{100}$

This polynomial is not perfect square trinomial.

$d)4x^2+20x+25\\$

complete square is,

$(2x+5)^2$

This polynomial is perfect square trinomial.

Therefore,

The polynomial a,b,c,are not perfect square polynomial and the polynomial d is perfect square polynomial.

To learn more about perfect square trinomial visit:

brainly.com/question/1538726

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2 years ago

If the point (x, y) is on the small rectangle, then which point must be on the large rectangle?

ANTONII [103]

<h2>Explanation:</h2><h2></h2>

Hello! Remember you have to write complete questions in order to get good and exact answers. This question is incomplete but I'm going to help you assuming some things: