3 years ago

Solve for x in the equation 5x - 3 = 12

Mathematics

1 answer:

sweet-ann [11.9K]3 years ago

5 0

Answer:

x=-3

Step-by-step explanation:

5x=12+3

5x=15

divide both sides by 5

x=3

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Markus receives dollar bills from his grandfather for one week. On the first day he received $1; on the second day he received $

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64$

Step-by-step explanation:

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'of' means multiply

3/5 of 20 means
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3 years ago

if 10 is less than a number is multiplied by 3, the result is equal to 2 times the number. What is the number?

olya-2409 [2.1K]

Hello!

We know that

(x - 10) * 3 = 2x

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x - 30 = 0

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x = 30

The answer is 30

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3 years ago

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Factor completly 4x^2 +8x -5

DaniilM [7]

∑ Hey, jillianwagler ⊃

Answer:

$\left(2x-1\right)\left(2x+5\right)$

Step-by-step explanation:

║Given info║:

Factor completely: $4x^2 +8x -5$

Solution~:

Breaking the expression~: $\left(4x^2-2x\right)+\left(10x-5\right)$

Factor out 2x from 4x² -2x : 2x(2x-1)

Factor out 5 from 10x - 5 : 5(2x - 1)

Put together: $=2x\left(2x-1\right)+5\left(2x-1\right)$

Factor out 2x - 1: $=\left(2x-1\right)\left(2x+5\right)$

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