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Anestetic [448]
3 years ago
15

3x+5=2x+8 it’s urgent!need step by step

Mathematics
2 answers:
zubka84 [21]3 years ago
6 0

Answer:

x =3

Step-by-step explanation:

step 1:Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    3*x-5-(2*x-8)=0

step 2:solve x+3=0

subtract 3 from both sides

step 3:   x=-3

answer:x= -3

sammy [17]3 years ago
4 0

Answer:x=3

Step-by-step explanation:

Move variable to the left side and change its sign

3x-2+5=8

Move constant to the right side and change its sign

3x-2x=8-5

Combine like terms

X=3

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4,100 meters. Hope it helped
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3 years ago
Which pair of angles are supplementary? ​
PolarNik [594]

Answer: H

Step-by-step explanation:

Supplementary angles just mean they add up to 180 degrees. 180 degrees means that when the two angles are put together one of each of their sides will form a straight line.

6 0
2 years ago
What is the answer?<br> 12 x 4 1/2 =?
TiliK225 [7]

Answer:

54

Step-by-step explanation:

What I would do is multiply 12x4 first to get 48, then after I'd multiply 12x1/2 to get 6 then I'd add them together to get 54.

5 0
3 years ago
the length of a rectangle is 5 less than twice the width.if the perimeter of the rectangle is 146,find the area of the rectangle
raketka [301]

Answer:

The area of the rectangle is 1222 units²

Step-by-step explanation:

The formula of the perimeter of a rectangle is P = 2(L + W), where L is its length and W is its width

The formula of the area of a rectangle is A = L × W

∵ The length of a rectangle is 5 less than twice the width

- Assume that the width of the rectangle is x units and multiply

   x by 2 and subtract 5 from the product to find its length

∴ W = x

∴ L = 2x - 5

- Use the formula of the perimeter above to find its perimeter

∵ P = 2(2x - 5 + x)

∴ P = 2(3x - 5)

- Multiply the bracket by 2

∴ P = 6x - 10

∵ The perimeter of the rectangle is 146 units

∴ P = 146

- Equate the two expression of P

∴ 6x - 10 = 146

- Add 10 to both sides

∴ 6x = 156

- Divide both sides by 6

∴ x = 26

Substitute the value of x in W and L expressions

∴ W = 26 units

∴ L = 2(26) - 5 = 52 - 5

∴ L = 47 units

Now use the formula of the area to find the area of the rectangle

∵ A = 47 × 26

∴ A = 1222 units²

∴ The area of the rectangle is 1222 units²

7 0
3 years ago
(a) A tram moved upward 3 meters per second for 18 seconds. What was the total change in the
Goshia [24]

Answer:

54

Step-by-step explanation:

3 times 18 = 54

5 0
3 years ago
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