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rosijanka [135]
3 years ago
5

Which equations are equivalent? Select all that apply. 1 + x = 3 x – 4 = -2 1 + x = -2 x + 3 = 5 x – 5 = 3

Mathematics
2 answers:
Lapatulllka [165]3 years ago
6 0
1+x=3
x=2

x-4=-2
x=2

1+x=-2
x=-3

x+3=5
x=2

x-5=3
x=8

So 1+x=3,x-4=-2,x+3=5 are equivalent
vekshin13 years ago
4 0

Answer:

1 + x = 3        or A,B,D your welcome

x – 4 = -2

x + 3 = 5

Step-by-step explanation:

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pantera1 [17]

Answer:

12. a = 2

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Step-by-step explanation:

12.

6a(a + 3) = 2a(3a + 5) + 16

First, distribute 6a on the left side, and distribute 2a on the right side.

6a² + 18a = 6a² + 10a + 16

Subtract 6a² from both sides.

18a = 10a + 16

Subtract 10a from both sides.

8a = 16

Divide both sides by 8.

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13.

\dfrac{1}{3}x + \dfrac{1}{2}x = \dfrac{1}{3}(x + 2)

The LCD of 2 and 3 is 6. We multiply both sides of the equation by 6 to get rid of all denominators.

6 \times \dfrac{1}{3}x + 6 \times \dfrac{1}{2}x = 6 \times \dfrac{1}{3}(x + 2)

\dfrac{6}{3}x + \dfrac{6}{2}x = \dfrac{6}{3}(x + 2)

2x + 3x = 2(x + 2)

Combine like terms on the left side. Distribute the 2 on the right side.

5x = 2x + 4

Subtract 2x from both sides.

3x = 4

Divide both sides by 3.

x = \dfrac{4}{3}

6 0
2 years ago
What is the first step when solving this equation for t?
Bogdan [553]

Answer:

D. subtract 31 from both sides

you cant combine cuz theyre not like terms and you have to undo the constant number before you undo the second term in the equation so you will end up needing to do letter choice D first.

Step-by-step explanation:

hope this helped a little bit :)

7 0
4 years ago
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timofeeve [1]
I got 347 as the number because 23% of 347 is almost 80.
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23*347= 7981
7981/100 = 79.81
Round that and you get 80.</span></span>
4 0
3 years ago
Which of these is not a scalar quantity A) time B) temperature c) velocity D) mass
Crank

Answer:

Hey there!

Velocity is a vector, not a scalar because it also has direction.

Let me know if this helps :)

8 0
4 years ago
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Oxana [17]
I think the rang numbers are -2 , 2 , -4 , and 2. i hope that correct.
8 0
3 years ago
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