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lesya [120]
3 years ago
11

Write the equation in standard form and classify the comic section it defines.

Mathematics
1 answer:
Leno4ka [110]3 years ago
4 0
Comlplete the squares for each


gropu x's and y's and solve



remember completeing square? do tat for x's and y's

so

(2x²-16x)+(-4y²+48y)-120=0
2(x²-8x)-4(y²-12y)-120=0
2(x²-8x+16-16)-4(y²-12y+36-36)-120=0
2((x-4)²-16)-4((y-6)²-36)-120=0
2(x-4)²-32-4(y-6)²+144-120=0
2(x-4)²-4(y-6)²=8
divide both sides by 8
\frac{(x-4)^2}{4}- \frac{(y-6)^2}{2}=1
das be hyperbola








2.
(2x²+20x)+(4y²+8y)+46=0
2(x²+10x)+4(y²+2y)+46=0
2(x²+10x+25-25)+4(y²+2y+1-1)+46=0
2((x+5)²-25)+4((y+1)²-1)+46=0
2(x+5)²-50+4(y+1)²-4+46=0
2(x+5)²+4(y+1)²-8=0
2(x+5)²+4(y+1)²=8
divide by 8
\frac{(x+5)^2}{4}+ \frac{(y+1)^2}{2}  =1
das is elipse (becase it is plus)
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Answer:

Width=28 1/3 Length=51 2/3

Step-by-step explanation:

1. Create an equation

x+(2x-5)=80

2. Solve

x+(2x-5)=80

3x-5=80

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So, if x=28 1/3

85/3x2=170/3

56 2/3-5

So, Length=51 2/3

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