3 years ago

PLEASE HELP ME!!!!!!!

1 answer:

4 0

He has come from the hole in the roof because the text states that he did not come from a door, a window, or a chimney, and that is the only answer that was left.

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Consider this quadratic equation. 2x2 − 1 = 3x + 4 Which equation correctly applies the quadratic formula?

Mariulka [41]

Answer:

$\frac{-(-3)+-\sqrt{(-3)^2-4(2)(-5)}}{2(2)}$

Step-by-step explanation:

Quadratic formula: $\frac{-b+-\sqrt{b^2-4ac} }{2a}$

$2x^2-1=3x+4\\\\2x^2-3x-5=0\\\\\\frac{-(-3)+-\sqrt{(-3)^2-4(2)(-5)}}{2(2)} \\\frac{3+-\sqrt{9+40} }{4}$

$x = \frac{3+-7}{4}$

Hope this helps and God bless!

6 0

2 years ago

Rewrite the equation by completing the square. 4 x^2 +20 x +25 = 0

Sav [38]

Answer:

x=-5/2

Step-by-step explanation:

4 x^2 +20 x +25 = 0

x^2+5x=-25/4

(b/2)^2=(5/2)^2

x^2+5x+25/4=0

(x+5/2)^2=0

x=-5/2

(Hope this helps)

6 0

3 years ago

Miguel and three of his friends went to the movies. They originally had a total of $40. Each boy had the same amount of money an

IRISSAK [1]

I would say the correct answer is B

I might be wrong

3 0

2 years ago

maria threw a party for the promotion she received the party cost $20 for two people if she invited 20 guest what would be the c

zhenek [66]

The total cost would be:

$20 = two people- 2*20=40$

20 = guest

20*20=

400 would be the cost

6 0

3 years ago

Corey spent 18 minutes coloring. She spent 6 times as many minutes reading

ruslelena [56]

Answer:

18 x 6 =108. she spent 108 minutes reading.

Step-by-step explanation:

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2 years ago