The difference 5wx^2-2wx^2

Three painters can paint three walls in three minutes. how many painters are needed to paint 27 walls in nine minutes?

Advocard [28]

There is 3 variable, in this case, painters, walls and time(minutes). You need to find how many painters needed and provided information on the walls and time(minutes).

Increasing walls will cause more painter needed. It was reversed in time which was increased time will cause less painter needed.

In this case, you need to divide the variable walls with time since it reversed so: 27wall/9 minutes
It equal to : 3 walls/minute

Information provided is:
3 painters= 3 walls/3 minutes
Equal to : 3 paintes= 1 wall/minute

To make it 3 walls/minute, the painter needed will be:
(3 walls/minute) / (1 wall/minute) x 3 painters= 9 painters

Answer: 9 painters

4 0

2 years ago

Solve for x. 5(x – 10) = 30 – 15x

SIZIF [17.4K]

Hey!

The first step to solving this problem would be to distribute the parenthesis. We do this so that we can get rid of the parenthesis.

Original Equation :
5 ( x - 10 ) = 30 - 15x

New Equation {Changed by Distribution} :
5x - 50 = 30 - 15x

The next step would be to 50 to both sides. The reason we do that is to get rid of the 50 that is on the left side of the equation.

Old Equation :
5x - 50 = 30 - 15x

New Equation {Changed by Adding 50 to Both Sides} :
5x = 80 - 15x

And now we would add 15x to both sides to get rid of the -15x on the right side of the equation.

Old Equation :
5x = 80 - 15x

New Equation {Changed by Adding 15x to Both Sides} :
20x = 80

Now we divide both sides by 20 to get x on it's own.

Old Equation :
20x = 80

New Equation {Changed by Dividing Both Sides by 20} :
$\frac{20x}{20}$ = $\frac{80}{20}$

Finally, all we have to do is solve to find x.

Old Equation :
$\frac{20x}{20}$ = $\frac{80}{20}$

Solution {Old Equation Solved} :
x = 4

So, in the equation 5 ( x – 10 ) = 30 – 15x, x = 4.

Hope this helps!

- Lindsey Frazier ♥

3 0

2 years ago

Read 2 more answers

100/225 square feet of your bakery will be used as your storefront, where customers come visit. The rest kill be used for storag

d1i1m1o1n [39]

(225-110)/225

125/225

5/9

5 0

2 years ago

The distance around a garden is 745 yards long. One brick is 15 yard in length. How many bricks are needed to go around the gard

garik1379 [7]

Answer:

49

Step-by-step explanation:

745 / 15 = 49

not 39, 49

7 0

2 years ago

What is x when the equation is -x - 14 = -2

lukranit [14]

Answer:

x = -12

Step-by-step explanation:

Add 14 to -2 because you want to remove -14 and leave x alone.

14 + -2 = 12

-x = 12

Remove the negative sign by dividing both sides by negative 1

x = -12

8 0

3 years ago

Read 2 more answers