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Trava [24]
4 years ago
9

Solve the quadratic by factoring. x^2-2x-66=-3x ​2 ​​ −2x−66=−3

Mathematics
1 answer:
Mariulka [41]4 years ago
5 0
x^{2} - 2x - 66 = -3x2 - 2x - 66 = -3
x = 9.18535277, -7.18535277
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A community chorus had 15 women and 12 men. What fraction of the chorus is made up of women ?
Neko [114]
27 is the total. So you divide 15 by 27 = .55 so 55%
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4 years ago
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A sequence {an} is defined recursively, with a1 = 1, a2 = 2 and, for n > 2, an =
Licemer1 [7]
I think you mean a_n= \frac{a_{n-1}}{a_{n-2}}
basically that measn yo divide that term by the previous term
ok

a3=a1/a2=1/2
a4=a3/a2=(1/2)/2=1/4
a5=a4/a3=(1/4)/(1/2)=1/2
a6=a5/a4=(1/2)/(1/4)=2
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ok, so notice a pattern
a3=a9
a4=a10
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and n>2ok, so
241=6*39+7
so therefor
a_{241}=a_{7+6(39)}
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7 0
4 years ago
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A group of 125 teenagers were asked which of the following activities they would most likely choose to spend their free time doi
erik [133]
If it was 25%, it would be a 90 degree angle. So we can calculate this using a proportion. 25/90 = 24/x. Cross multiply to get 25x = 2160. When you divide by 25 on both sides you get 86.4. So the angle should be 86 degrees. Hope this helps.
3 0
3 years ago
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Karo-lina-s [1.5K]

Answer C : 3x^2+7xy-2y^2

equivalent to the following expression

(2x^2+4xy-y^2)+(x^2+3xy-y^2)

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Combine like terms

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2x^2 + x^2 is 3x^2

4xy+3xy is 7xy

-y^2-y^2 is -2y^2

So expression becomes

3x^2+7xy-2y^2

Answer  C is correct

3 0
4 years ago
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Evaluate 6 to the power of -2
alex41 [277]

Answer:

1/36

Step-by-step explanation:

6^-2 = 1/6^2 = 1/36.

7 0
4 years ago
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