All categories

3 years ago

Three times a number is three more than twice the number. Which equation can be used to find the value of x, the unknown number?

Mathematics

2 answers:

skelet666 [1.2K]3 years ago

7 0

3x = 2x + 3. I hope this helps! Could I possibly get brainliest?

Umnica [9.8K]3 years ago

6 0

The answer is 3x+3(2)

You might be interested in

A plot of land doubles in size by adding x meters to the length and x meters to the width of the land.If the original plot had a

Soloha48 [4]

Answer:

100

Step-by-step explanation:

The original area is (200 m)×(300 m) = 60000 m². You want an area that is ...

(200 +x)×(300 +x) = 120000

60000 +500x +x² = 120000 . . . . eliminate parentheses

x² +500x -60000 = 0 . . . . . . . . . . subtract 120000

(x +600)(x -100) = 0 . . . . . . . . . . . . factor

The positive value of x that makes a factor zero is x = 100.

The value of x is 100.

_____

<em>Check</em>

The larger plot will be 300×400, the larger dimension being double the original smaller dimension.

3 0

3 years ago

Slove the equation -29=9-6k-2k-14

Mashcka [7]

Answer:

Step-by-step explanation:

k=3

4 0

3 years ago

five times the difference of twice a number and three, decreased by the sum of the number and eight , equals 13

kramer

Answer:

x=4

Step-by-step explanation:

5(2x-3)-(x+8)=13

10x-15-x-8=13

9x-23=13

9x=36

x=4

4 0

4 years ago

Please show your work and explain it.

Maru [420]

Answer:

$f(x)=\dfrac{x+2}{2(x-2)}$

Step-by-step explanation:

Remember when you divide fractions, you need to get the reciprocal of the divisor and multiply. So your first simplification would be:

$\dfrac{x^2+4x+4}{x^2-6x+8}\div\dfrac{6x+12}{3x-12}\\\\=\dfrac{x^2+4x+4}{x^2-6x+8}\times\dfrac{3x-12}{6x+12}\\\\=\dfrac{(x^2+4x+4)(3x-12)}{(x^2-6x+8)(6x+12)}$

Next we factor what we can so we can further simplify the rest of the equation:

$=\dfrac{(x^2+4x+4)(3x-12)}{(x^2-6x+8)(6x+12)}\\\\=\dfrac{(x+2)(x+2)(3x-12)}{(x^2-6x+8)(6(x+2))}\\\\$

We can now cancel out (x+2)

$=\dfrac{(x+2)(3x-12)}{(x^2-6x+8)(6)}$

Next we factor out even more:

$=\dfrac{(x+2)(3)(x-4)}{(x-2)(x-4)(6)}$

We cancel out x-4 and reduce the 3 and 6 into simpler terms:

$=\dfrac{(x+2)(1)}{(x-2)(2)}$

And we can now simplify it to:

$=\dfrac{x+2}{2(x-2)}$

6 0

4 years ago

Y = x2 + 4<br> y = x + 6

Nataliya [291]

Answer:

X=2

Y=8

Step-by-step explanation:

Since both equations are equal to y we can equal both equations

2x+4=x+6

x=2

y=2(2)+4

y=8

4 0

3 years ago