Equation of line joining the origin and centroid of a triangle having vertices (1, -2), (3, 5) and (5, -6).

Step-by-step explanation:

the formulae for finding centroid is (x1+x2+x3/3 , y1+y2+y3/3)

so the coordinates of centroid is (1+3+5/3 , -2+5-6/3)

(3,-1) and other point is the origin (0,0)

we know ,the equation is

x-x1/x1-x2= y-y1/y1-y2

x-3/3-0= y-(-1)/-1-0

x-3/3=y+1/-1

-x+3=3y+3

or -x+3y=0

or x-3y=0(multiplying -1 in both sides)

so the eq is x-3y=0 ans

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22.83 repeating

step-by-step explanation:

137 ÷ 6 is 22.8333333 therefore we understand that 3 is repeating.

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= 5

step-by-step explanation:

to find the 15th term substitute n = 15 into the nth term formula

= (- 3 × 15 ) + 50 = - 45 + 50 = 5