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mestny [16]
3 years ago
8

Washington Middle School has the annual musical production this weekend. Of the 900 tickets sold, 45 percent are for the Friday

night performance. How many tickets were sold for the Friday night performance? 20 180 405 945
Mathematics
2 answers:
koban [17]3 years ago
8 0
405 is the correct answer
Verizon [17]3 years ago
8 0
45% of 900=900(0.45)=405. The third answer choice is correct. Hope this helped!
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How can you write the expression with rationalized denominator? sqrt3 - sqrt6 / sqrt 3 + sqrt 6
harina [27]
Answer:  2√2 - 3

Explanation:


The expession written properly is:

\frac{ \sqrt{3}- \sqrt{6}  }{ \sqrt{3}+ \sqrt{6} }

To rationalize that kind of expressions, this is to eliminate the radicals on the denominator you use conjugate rationalization.

That is, you have to multiply both numerator and denominator times the conjugate of the denominator.

The conjugate of √3+√6 is √3 - √6, so let's do it:

\frac{ \sqrt{3} - \sqrt{6} }{ \sqrt{3} + \sqrt{6} } . \frac{ \sqrt{3}- \sqrt{6}  }{ \sqrt{3}- \sqrt{6} }

To help you with the solution of that expression, I will show each part.

1) Numerator: (√3 - √6) . (√3 - √6) = (√3 - √6)^2 = (√3)^2 - 2√3√6 + (√6)^2 =

= 3 - 2√18 + 6 = 9 - 6√2.

2) Denominator: (√3 + √6).(√3 - √6) = (√3)^2 - (√6)^2 = 3 - 6 = - 3

3) Then the resulting expression is:

 9 - 6√2
-----------
 -3

Which can be further simplified, dividing by - 3

    -3 + 2√2

Answer: 2√2 - 3

7 0
3 years ago
Read 2 more answers
The burger details:
sveticcg [70]
Set up proportion  170/180=x/1  than cross multiply  170x=180 divide both sides by 170   answer 0.944  so 94% remains
6 0
3 years ago
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