If 2x+5=8x then 12x=?

Mathematics

2 answers:

vichka [17]3 years ago

8 0

Answer:

The value of 12x is 10

Step-by-step explanation:

We need to find the value of 12x

The given expression is 2x + 5 = 8x

Subtract 2x from both the sides in above expression,

2x + 5 - 2x = 8x - 2x

5 = 6x

Multiply both the sides by '2' in above expression

2(5) = 2(6x)

10 = 12x

Hence, the value of 12x is 10

UkoKoshka [18]3 years ago

5 0

2x+5=8x

5=6x

x=5/6

12(5/6)

x=10

Blake21

3 years ago

Why did you multiply by 2? Is it because you were at 6x and needed to be at 12x? If so, does that mean if you were at 6x and needed to be at 24x, you would’ve multiplied by 4 instead of 2?

You might be interested in

If sin(a) = cos(2a), then what is the value of a?

Mariulka [41]

Answer:

-90 , 30

Step-by-step explanation:

sina = cos(2a)

= 1 - 2(sina)^2

2(sina)^2 + sina -- 1 = 0

( sina + 1 )( 2sina - 1 ) = 0

sina = -1 or sina = 1/2

=> a = -90 degrees or => a = 30 degrees

3 0

3 years ago

Solve for y when x=15 4x-3y=51

Naddika [18.5K]

4x - 3y = 51, when x = 15

Plug in 15 for x.

4(15) - 3y = 51

Simplify.

60 - 3y = 51

Subtract 60 from both sides.

-3y = 51 - 60

Simplify.

-3y = -9

Divide both sides by -3.

y = -9/-3

Simplify.

y = 3

~Hope I helped!~

6 0

4 years ago

Aiden works at a lab with a huge circular particle accelerator. It has a diameter of 8 kilometers. What is the accelerator's rad

Kipish [7]

Step-by-step explanation:

Diameter = 2x Radius

Radius = 1/2 Diameter

$= \frac{1}{2} \times 8 \\ = 4km$