The sum of ext. angles on any convex polygon is always 360 degrees
Slope formula : (y2 - y1) / (x2 - x1)
(2,4)...x1 = 2 and y1 = 4
(5,10)...x2 = 5 and y2 = 10
now we sub and solve
slope = (10 - 4) / (5 - 2) = 6/3 = 2
The slope of the line is 2....and this is basically saying that Jan runs 2 laps every minute
The total perimeter is 3x +21= ? first we isolate the variable by subtracting 21 on both sides. we then get 3x=21 now we divide by three on both sides and we find that x=7 to check this plug this in to x+9 x+10 and x +2 and see if x+10 is the hypotenuse.
Sub a =3 and b = 5 into the expression above you get:
8*3+6(2*5-7)
then use bedmas accordingly (this is the order of arithmetic operations)
8*3+6(2*5-7)
=24+6(10-7)
=24+6(3)
=24+18
=42
