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tekilochka [14]
3 years ago
6

4-(2x-3) = 3(x + 1) i need steps too

Mathematics
2 answers:
ozzi3 years ago
8 0
Next time u can use math papa. it's a app that will help u too

evablogger [386]3 years ago
6 0
Ok, hi by the way so what you would do is the distribution property. so first your gonna find out what to distribute..


4-(2x-3)=3(x+1) -----> distribute the negative sign from the left side and then the 3 from the right one

4-2x+3=3x+3 -------> now your going to combine like terms on each side (the x's and the whole numbers)

7-2x=3x+3 -------> so now you want to get rid of the x on the right side by doing its opposite, so in this case you want to subtract. and remember whatever you do on one side you MUST do to the other..

7-6x=3 ------> in this one your gonna want to get rid of that 7 so the -6x is by itself on the left. so you would do its opposite as well. so in this case subtraction. and REMEMBER, you have to do the same thing to the 3 on the right. so subtract 7 from that too.

-6x=-4 -----> so now we need to get the x by itself..so we are going to divide the -6 from both sides.

x=0.66 repeating is your answer!

I hope you understand..message me if you dont and I'll try to help you more



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There are some people in a cinema.
Elan Coil [88]

Answer:

Adults = 510

Step-by-step explanation:

Given

Children = \frac{3}{5}

Girls:Boys = 2 : 7

Girls = 170

Required

Determine the number of adults

First, we need to calculate the number of children

Girls:Boys = 2 : 7

Given that: Girls = 170

Substitute 170 for Girls in Girls:Boys = 2 : 7

170 : Boys = 2 : 7

Convert to fraction

\frac{170}{Boys} = \frac{2}{7}

Cross Multiply

Boys * 2 = 170 * 7

Divide both sides by 2

Boys = \frac{170 * 7}{2}

Boys = \frac{1190}{2}

Boys = 595

So, the number of children are:

Children = Boys + Girls

Children = 595 + 170

Children = 765

Next, we calculate the number of people in the cinema.

Children = \frac{3}{5} * People

Substitute 765 for Children

765 = \frac{3}{5} * People

Make People the subject.

People = \frac{765 * 5}{3}

People = \frac{3825}{3}

People = 1275

If 3/5 are children, then 2/5 are adults.

So:

Adults = \frac{2}{5} * 1275

Adults = \frac{2* 1275}{5}

Adults = \frac{2550}{5}

Adults = 510

7 0
3 years ago
A rectangle has an area of 12 square feet and a length 5 feet. What is its width
Alla [95]
5 times something must equal 12
12/5 equals 2.4
w=2.4
5 0
4 years ago
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From 309 grams to 299 grams.
Tom [10]

Answer: 3 percent decrease. = 0% Increase or a 5 % decrease.

Step-by-step explanation: Sorry, I don't have an explanation!

3 0
4 years ago
Need help! :(
snow_tiger [21]
Given:
2x² + 8x - 12 = 0

Solution:
The first term 2x² can't be changed to a complete square form. If we want to change it to the complete square form, we need to change 2x² to 4x². So, multiply both sides of the equation by 2
2x² + 8x - 12 = 0
------------------------- multiplied by 2
4x² + 16x - 24 = 0

then change it to complete quadratic form by adding 16 to both sides
4x² + 16x - 24 = 0
4x² + 16x + 16 - 24 = 16
4x² + 16x + 16 = 16 + 24
4x² + 16x + 16 = 40
(2x + 4)(2x + 4) = 40
(2x + 4)² = 40
This is the complete quadratic form of the equation.

Because there is no option of the solution, we can modify the equation by multiplying the two sides by a square number. I multiply the equation by 4.
(2x + 4)² = 40
4 (2x + 4)² = 4 × 40
4 (2x + 4)² = 160
4 (2x + 4)(2x + 4) = 160
2(2x + 4) 2(2x + 4) = 160
(4x + 8)(4x + 8) = 160
(4x + 8)² = 160

The answer is option b
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4 years ago
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2 3/5...........................
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