All categories

3 years ago

Three times a number, X, increased by four is equal to five times the number, x. Which equation can be used to solve for x

Mathematics

1 answer:

WITCHER [35]3 years ago

4 0

Answer:

Step-by-step explanation:

Three times a number x : 3x

Three times a number x increase by 4: 3x +4

Five times the number x: 5x

5x = 3x +4

Subtract 3x from both the sides.

5x - 3x = 3x +4 - 3x

2x = 4

Divide both sides by 2

2x/2 = 4/2

x=2

The number is 2

You might be interested in

Find Tan Θ given sin Θ = √3/2 and cos Θ = 1/2 a √3 b 3 c 2 d 4

densk [106]

We know:

$\tan\Theta=\dfrac{\sin\Theta}{\cos\Theta}$

We have:

$\sin\Theta=\dfrac{\sqrt3}{2},\ \cos\Theta=\dfrac{1}{2}$

Substitute:

$\tan\Theta=\dfrac{\frac{\sqrt3}{2}}{\frac{1}{2}}=\dfrac{\sqrt3}{2}:\dfrac{1}{2}=\dfrac{\sqrt3}{2}\cdot\dfrac{2}{1}=\sqrt3$

Answer: a. √3

4 0

3 years ago

Read 2 more answers

A jar is filled with 74 different colored marbles, 10 of which are red, 38 of which are blue, and 26 of which are green. A playe

Alex_Xolod [135]

Solution :

Colored marble Prize

Red ---- 10 20

Blue --- 38 10

Green --- 26 5

P(red) = 10/74 = 5/37

P(blue) = 38/74 = 19/37

P( green) = 26/74 = 13/37

Therefore,

X → Red Blue Green

P(X) 5/37 19/37 13/37

The expected values are :

$$20 \times \frac{5}{37} - 10 \times \frac{19}{37} - 5 \times \frac{13}{37}$

= -4.189

Thus it is not profitable to play the game.

6 0

3 years ago

Estimate the number of people who can stand in an area that is 400yds X 600yds if 19 people can fit into a space that is 10ft X

Sergeeva-Olga [200]

Answer:

3428

Step-by-step explanation:

So 19 people can fit is 70 ft^2, then 3428ppl can fit.

8 0

4 years ago

Find an equation of the line parallel to y= 1/3x +1 and that passes through the point (3,5)

bulgar [2K]

So in order to find the line you’ll have to submit the point (3,5) and the slope into the point slope formula : y-y1= m(x-x1)

Y-5= 1/3(x-3)

Solve(turn to y intercept form):

Y-5= 1/3x -1

6 0

3 years ago

Jerry deposited 20,000 on an investment that will give 1,750 for every year that his money stays in the account. How much money

lesya692 [45]

Answer:

$34,000

Step-by-step explanation:

Jerry will get $1,750 for every year that his money stays in the account thus for 8 years he will get:

8*1,750 = $14,000

Together with the deposited money:

$20,000 + $14,000 = $34,000

By the end of year 8 there will be $34,000 of Jerry's account.

3 0

2 years ago