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lana [24]
3 years ago
10

Triangle ABC has a perimeter of 22cm

Mathematics
1 answer:
shepuryov [24]3 years ago
5 0


ABC is NOT a right triangle because the Pythagorean theorem fails

AC=22 - (8+5) = 22 - 13 = 9

9^2+13^2 = 81 +169=250

22^2 = 484
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kotegsom [21]

That's not a linear system, but you have an awesome school system for giving you this problem.

\dfrac 5 y - \dfrac 2 x = \dfrac{13}6

Multiply by 6xy to clear the fractions.

30x - 12y = 13 xy

That's a second degree equation, also known as a conic.  That one happens to be a hyperbola.  

30x = y(13 x +12)

y = \dfrac{30x}{13 x + 12}

Let's clear the fractions from the second equation, multiplying out common denominator xy:

\dfrac {36} x - \dfrac {24} y = 1

36y - 24 x = xy

We are being asked to find the meet of two hyperbolas, so we expect two answers, a quadratic equation.

Substituting,

36 \left( \dfrac{30x}{13 x + 12} \right) - 24 x = x \left( \dfrac{30x}{13 x + 12} \right)

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1080 x - 312 x^2- 288 x = 30x^2

x(792 - 342 x)= 0

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We have to rule out x=0 because it's in the denominator.

y = \dfrac{30x}{13 x + 12} = \dfrac{30(44/19)}{13(44/19)+12}

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8 0
3 years ago
What is a formula for the nth term of the given sequence? 20,23, 26...​
lord [1]

Answer:

17 + 3n

Step-by-step explanation:

20, 23,26 ..............

This is an arithmetic series

First term = a = 20

Common difference = second term -  first term

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nth terms = a + (n-1)*d

               = 20 + (n -1) *3

               = 20 + n*3 - 1*3

              = 20 + 3n - 3

               = 20 - 3 + 3n

              = 17 + 3n

6 0
3 years ago
#10 am I correct <br> Can you explain <br> If I'm incorrect then what is the answer
Bad White [126]
Yes, u are correct, hope this helped
6 0
3 years ago
Does anyone know if 2/8 is equivalent to 16/64???
Papessa [141]

Answer:

Step-by-step explanation:

How is 16 related to 2?  We multiply 2 by 8, obtaining 16.

How is 8 related to 64?  We multiply 8 by 8, obtaining 64.

So 2/8 is equivalent to 16/16.

5 0
3 years ago
Read 2 more answers
2x - 3y = 16 5x - 3y = 13
stepan [7]
AAAASAAAAAAAAAAAAAAhdhddhd
5 0
2 years ago
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