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3 years ago

calculate the distance between the points!

Mathematics

2 answers:

OLEGan [10]3 years ago

4 0

Answer:

The answer is the distance is 9. I am hopefully correct

weeeeeb [17]3 years ago

4 0

Distance formula: d = √(x2-x1)^2+(y2-y1)^2

d = √(8-1)^2+(-9-(-1)^2)

d = √7^2+(-8)^2

d = √49+64

d = √113

d ≈ 10.63

Best of Luck!

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$y=2x^2+8x-9\\D=b^2-4ac\\D=64-4(2)(-9)\\D=64+72 > 0$

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$y=2x^2+8x-9\\y=2[(x^2+4x)]-9\\y=2[(x^2+4x+4)-4]-9\\y=2[(x+2)^2-4]-9\\y=2(x+2)^2-8-9\\y=2(x+2)^2-17$

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3 years ago

￼calculate the distance between the points!

calculate the distance between the points!