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Wittaler [7]
3 years ago
10

Which expressions are equivalent to 5x - 15

Mathematics
2 answers:
lara31 [8.8K]3 years ago
7 0
B C and E are equivalent to 5x -15
zheka24 [161]3 years ago
5 0
Your answer would be A I think !
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The diameter of the planet Mercury is 4.87×103 kilometers. The diameter of the planet Venus is 1.21×104kilometers. The diameter
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A whole lotta points. Please answer its life and death urgency. I will give everything, including brainliest. But ONLY if you an
Oksana_A [137]

Answer:

The correct answer is 31x + 0.5

Step-by-step explanation:

∵ 13x + 5 + 17x - 4.5 + x

To solve this correctly you must to add the coefficients of the like terms (terms who has same variables or constant terms)

∵ 13x , 17x , x are like terms ⇒ terms with same variable

  (same letters and same power)

∵ 5 , 4.5 are like terms ⇒ constant terms (numbers only)

∴ (13x + 17x + x) + (5 - 4.5) = 31x + 0.5

* <u>The error of first answer:</u>

- 18x + 17x - 4.5 + x

- She add 13x + 5 = 18x ⇒ she add unlike terms

* <u>The error of second answer:</u>

- 35x - 4.5 + x

- She add 13x + 5 + 17x  = 35x ⇒ she add 2 like terms with 1 unlike term

* <u>The error of third answer:</u>

- 30.5x + x

- She add 13x + 5 + 17x - 4.5 = (13x + 17x) + (5 - 4.5) =

  30x + 0.5 ⇒ she add 2 like terms and 2 constant terms

  and then add the 2 unlike answers

* <u>The error of fourth answer:</u>

- 31.5x

- She add 13x + 5 + 17x - 4.5 + x = (13x + 17x + x) + (5 - 4.5) =

  31x + 0.5 ⇒ she add 3 like terms and 2 constant terms

  and then add the 2 unlike answers

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3 years ago
Solve the formula C = ud for d
Ludmilka [50]

Answer:

C/u = d

Step-by-step explanation:

Divide u in both sides

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3 years ago
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