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zavuch27 [327]
3 years ago
15

7(x-2) - 3x + 5 = -2 (5x-4) + 4 Please help asap! - xxx

Mathematics
2 answers:
Oxana [17]3 years ago
5 0

Answer:

x=

2

3

​

=1.500

Step-by-step explanation:

(((7•(x-2))-3x)+5)-((0-2•(5x-4))+4)  = 0

STEP

2

:

Equation at the end of step 2

 ((7 • (x - 2) -  3x) +  5) -  (12 - 10x)  = 0

STEP

3

:

STEP

4

:

Pulling out like terms

4.1     Pull out like factors :

  14x - 21  =   7 • (2x - 3)

Equation at the end of step

4

:

 7 • (2x - 3)  = 0

STEP

5

:

Equations which are never true

5.1      Solve :    7   =  0

This equation has no solution.

A  non-zero constant never equals zero.

Solving a Single Variable Equation:

5.2      Solve  :    2x-3 = 0

Add  3  to both sides of the equation :

                     2x = 3

Divide both sides of the equation by 2:

                    x = 3/2 = 1.500

One solution was found :

x = 3/2 = 1.500

Varvara68 [4.7K]3 years ago
3 0

Answer:

x = 1.5

Step-by-step explanation:

Step 1: you distribute what is on the outside of the parenthesis to EVERYTHING on the inside of the equation which will leave you with

7x-14-3x+5=-10x+8+4

Step 2: Combine your like terms. You have to add all the X's on the left side first, then your whole numbers. After that, you go to the right side and do the same thing. This should leave you with    4x-9=-10x+12

Step 3: get x to one side of the equation. You do the opposite of what the x is on the right. So you would add 10x on both sides. This should leave you with 14x-9=12

Step 4: You do the opposite of the whole number on the left to both sides/ add 9 to both sides. This should leave you with 14x=21

Step 5: you now divide both sides by 14 because 14x is a multiplication problem, and you need to do the opposite. So you should finally get

X=1.5

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Sati [7]

Answer:

4 × 10^6

Step-by-step explanation:

8 × 10^24/2 × 10^18

to cut it short, subtract 18 from 24 ( the exponent) = 6

and divide 8 by 2 = 4

<u>8 × 10^24</u>

2 × 10^18

= 4 × 10^6

8 0
3 years ago
ABC is similar to DEF. Find the length of
Helen [10]

Answer:

x=15

Step-by-step explanation:

You need to do proportions.

Since 16/12 = 1.3333333333333333333,

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4 0
4 years ago
1. What is are the coordinates of Q’ and R’ ?
Bogdan [553]

Q' = (7, 2 ) and R' = (1, - 5 )

given P(- 4, 4 ) and P'(3, 1 ), then the translation vector is

v = < 3, 1 > - < - 4, 4 > = < 7, - 3 >

Thus to obtain the coordinates of the images, add 7 to the x-coordinate and subtract 3 from the y-coordinate

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8 0
4 years ago
A grocery sold 5kg of wheat flour at Rs30 per kg and gained 20%. If he had sold it at Rs27 per kg, what would be his gain or los
maria [59]

Answer:

His gain percent would have been 8%

Step-by-step explanation:

The key to answering this question is to first calculate the price at which the wheat flour was bought.

Mathematically;

% profit = (selling price-cost price)/cost price * 100%

Let the cost price be $x

Thus;

% profit = (30-x)/x * 100

20 = 100(30-x)/x

20x = 3000-100x

100x + 20x = 3000

120x = 3000

x = 3000/120

x = Rs 25

So let’s assume he sold at Rs 27

His profit would have been 27-25 = 2

His gain or loss percentage would’ve been;

2/25 * 100/1 = 200/25 = 8% (gain, since selling price is greater than the cost price)

3 0
3 years ago
9x^2 + 6x -1 =0 (Round to the nearest hundredth)
hodyreva [135]
9x^2 + 6x = 1
Factor out 3x
3x (3x +2)=1
Use the zero product property
3x=1
3x+2 = 1
X= +1/3 and -1/3
7 0
3 years ago
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