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2 years ago

Which of the following are solutions to the equation below?

Mathematics

2 answers:

Semmy [17]2 years ago

7 0

Answer:

x = -3 or x = -6

Step-by-step explanation:

Solve for x over the real numbers:

3 x^2 + 27 x + 54 = 0

The left hand side factors into a product with three terms:

3 (x + 3) (x + 6) = 0

Divide both sides by 3:

(x + 3) (x + 6) = 0

Split into two equations:

x + 3 = 0 or x + 6 = 0

Subtract 3 from both sides:

x = -3 or x + 6 = 0

Subtract 6 from both sides:

Answer: x = -3 or x = -6

Elodia [21]2 years ago

4 0

Answer:

x = -3, -6.

Step-by-step explanation:

3x2 + 27x + 54 = 0

Divide through by 3:

x^2 + 9x + 18 = 0

(x + 3)(x + 6) = 0

x = -3, -6.

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Answer:

0.20%

Step-by-step explanation:

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2 years ago

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Yo! Solving linear equations with integers! These are just some practice exercises I need help with! So they should probably be

drek231 [11]

Answer:

Step-by-step explanation:

<h3>Solving linear equation with one variable:</h3>

1) -4 + 3x = 4x - 8

Add 4 to both sides

-4 + 3x + 4 = 4x - 8 + 4

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Subtract 4x from both sides,

3x - 4x = -4x + 4x - 4

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$\sf \boxed{\bf x = 4}$

2) -5x - 8 = 2

Add 8 to both sides

-5x - 8 + 8 = 2 + 8

-5x = 10

Divide both sides by (-5)

$\sf \dfrac{-5}{-5}x =\dfrac{10}{-5}$

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3) 12r - 14 = 5(2-r)

12r - 14 = 5*2 - 5*r

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Add 14 to both sides

12r - 14 + 14 = 10 - 5r + 14

12r = 24 - 5r

Add 5r to both sides

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Divide both sides by 17

r = 24/17

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3x - 8 = -17 - 2x

Add 8 to both sides

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Add 2x to both sides

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Divide both sides by 5

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2 years ago

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Serggg [28]

Answer:

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Step-by-step explanation:

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2 years ago

Kate divides 1/2 gallon of water equally among 5 plants.

elixir [45]

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2 years ago

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Find the simple interest earned in a savings account that pays 5% interest if $500 is deposited for 4 years. A. $100, B. $1000,

g100num [7]

To calculate simple interest, you first need to multiply the original amount by the percentage of the money which is going to be added.

In this situation, 500 x 0.05 is the interest which will be added each year.
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3 years ago