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3 years ago

15

DeShawn won 85 super bouncy ball playing basketball at his school's game. Later, he gave three to each of his freinds. He only h

as 10 remaing. how many freinds does he have?

1 answer:

Alecsey [184]3 years ago

6 0

Answer:

25 friends

Step-by-step explanation:

85 - 10 = 75

75/3 = 25

Answer check:

25*3 = 75

75 + 10 = 85

DeShawn has 25 friends. (Wow, DeShawn must be popular)

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Solve irrational equation pls

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$\hbox{Domain:}\\
x^2+x-2\geq0 \wedge x^2-4x+3\geq0 \wedge x^2-1\geq0\\
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(x+2)(x-1)\geq0 \wedge (x-3)(x-1)\geq0\wedge x\in(-\infty,-1\rangle\cup\langle1,\infty)\\
x\in(-\infty,-2\rangle\cup\langle1,\infty) \wedge x\in(-\infty,1\rangle \cup\langle3,\infty) \wedge x\in(-\infty,-1\rangle\cup\langle1,\infty)\\
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$
\sqrt{x^2+x-2}+\sqrt{x^2-4x+3}=\sqrt{x^2-1}\\
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2\sqrt{(x^2+x-2)(x^2-4x+3)}=-x^2+3x-2\\
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(x+2)(x-1)(x-3)(x-1)=\left(\dfrac{-x^2+x+2x-2}{2}\right)^2\\
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There's one more condition I forgot about
$-(x-2)(x-1)\geq0\\
x\in\langle1,2\rangle\\$

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