3 years ago

Use the quadratic formula to solve x2 + 8x + 9 = 0. What are the solutions to the equation?

Mathematics

1 answer:

Yuri [45]3 years ago

8 0

2x + 8x +9 =0
10x +9 =0
10x = -9
————-
10x
Answer is - 1.1

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Burka [1]

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2 years ago

Para encher 2/5 de uma piscina são necessários 60.000 litros de água. Qual é a capacidade dessa piscina?

natali 33 [55]

Answer:

A capacidade dessa piscina é de 150.000 litros de água.

Step-by-step explanation:

A capacidade da piscina é de x.

Para encher 2/5 de uma piscina são necessários 60.000 litros de água.

Isto implica que:

$\frac{2x}{5} = 60000$