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Fiesta28 [93]
3 years ago
5

The eatery restaurant has 200 tables a recent evening there were reservations for 1/10 of the tables how many tables were reserv

ed
Mathematics
2 answers:
leonid [27]3 years ago
5 0
1. 20 tables are reserved.

2. I know this because...
   - If I make an equivalent fraction to 1/10, using 200 as the denominator, I get:
       · 1/10 x 20 = 20/200 tables are reserved.

Hope this helped! :)
SOVA2 [1]3 years ago
4 0
Well, if there were 200 tables and 1/10 of the tables had reservations, let's write and expression. 
200x1/10
This is because <span>of <em />means multiply. Then, because multiplying a fraction is the same as dividing by the reciprocal we can divide 200 by 10.
 200/10
This is equal to
20 
so 20 of the tables were filled. 
To check you can see if 20x10 is 200 and it is so the answer is 20.</span>
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1. What is the vertex form of the equation?
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2. factor out the 2

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what 2 numbers multiply to get 12 and add to get 8?

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3.

for ax^2+bx+c=0

x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}

in our case

x^2-7x-6=0

a=1, b=-7, c=-6

x=\frac{-(-7) \pm \sqrt{(-7)^2-4(1)(-6)}}{2(1)}

x=\frac{7 \pm \sqrt{73}}{2}

so x=\frac{7+\sqrt{73}}{2} and x=\frac{7-\sqrt{73}}{2}



4. remember that i=\sqrt{-1} so i^2=-1

treat i as a variable

(-2i)(8i)=

(-2)(i)(8)(i)=

(-2)(8)(i)(i)=

(-16)(i^2)=

(-16)(-1)=

[tex}16[/tex]

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