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4 years ago

10

PLEASE HELP ASAP!!!!!!!!!!

1 answer:

Elis [28]4 years ago

6 0

Answer:

Step-by-step explanation:

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find the perpendicular distance between (2,5) and the line 2x - y + 7 = 0 in a surd form with a rational denominator

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$The\ distance\ between\ P(x_P;\ y_P)\ and\ the\ line\ Ax+By+C=0:\\\\d=\frac{|Ax_P+By_P+C|}{\sqrt{A^2+B^2}}\\===================================\\P(2;\ 5);\ 2x-y+7=0\\\\x_P=2;\ y_P=5;\ A=2;\ B=-1;\ C=7\\\\d=\frac{|2\times2-1\times5+7|}{\sqrt{2^2+(-1)^2}}=\frac{|4-5+7|}{\sqrt{4+1}}=\frac{|6|}{\sqrt5}\cdot\frac{\sqrt5}{\sqrt5}=\frac{6\sqrt5}{5}$

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4 years ago

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72/(7+5)
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4 years ago

Pick a blue marble , a green marble , and another blue marble from a bag of 2 blues, 4 reds , 4 greens what is the probability

trapecia [35]

i hope my answer help you

Step-by-step explanation:

the probability of pick a blue marble =2/10 ( simplest form =1/5)

the probability of pick a green marble =4/10

the probability of pick another blue marble =2/10 ( simplest form =1/5)

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Step-by-step explanation:

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alexira [117]

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Hope this helps!

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4 years ago

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