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4 years ago

PLEASE HELP MEEEEE!!!!!!!!!!! Solve this quadratic equation. x 2 + 5x + 3 = 0

Mathematics

1 answer:

andreev551 [17]4 years ago

3 0

Answer:

$x1=\frac{-5+\sqrt{13}}{2}\\ \\x2=\frac{-5-\sqrt{13}}{2}$

Step-by-step explanation:

x² + 5x + 3 = 0

x = (- 5 +/- √5² - 4x1x3)/2x1

= (-5+/-√13)/2

x₁ = (- 5 + √13)/2

x² = (- 5 - √13)/2

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3 years ago

Which expression is equivalent to 2^5?

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3 years ago

The container that holds the water for the football team is 2/9 full. After pouring in 12 gallons of water, it is 2/3 full. How

Luden [163]

Answer:

27 gallons

Step-by-step explanation:

Our equation is: $\frac{2x}{9} +12 = \frac{2x}{3}$

What do we need to find: x

We need to first find x, so lets find x first.

$12 = \frac{2x}{3} - \frac{2x}{9}$

=> $12 = \frac{6x}{9} - \frac{2x}{9}$

=> $12 = \frac{4x}{9}$

=> x = 27

Lets go back to our equation.

$\frac{2(27)}{9} +12 = \frac{2(27)}{3}$

We are going to simplify this before solving this. We are going to get: $\frac{54}{9} +12 = \frac{54}{3}$

=> 18 = 18

Therefore, we found x and we checked that our x value is correct. Now, we need to find how many gallons can the container can hold.

$\frac{3x}{3} = a$ [a = gallons can the container hold]

=> x = a

Basically that means the container can hold 27 gallons of water.

Please give me brainliest if this is helpful ;D

4 0

3 years ago

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