ElectricPavlov

Thanx, Chris!

-3+6+84 = 3 +84=87

201.8 degrees

I think you left something out of your question???

69 x 69 = 69^2 = 4761     You could easily use the calculator on this website to get this answer.

Funny!   But why should I do what you tell me to do???

60 minutes= 1 hr

54/1 = 54 kmh

54km/60min = .9 km/min

The equation that defines his pay is  PAY= 160n   where n = number of returns

he has already earned   160 x 4 = 640 dollars

so  6240 - 640 = amount still to be earned = 160n

5600=160n

n=35  more returns to prepare

Perimeter of the circle = 2 pi r

1/2 Perimeter = pi r

Sector circumference portion =  theta/(2pi)  x 2 pi r = theta  r

the sector perimeter ALSO includes two radii lengths    r + r

  so the total perimeter of the sector = theta r + r + r

  and the question states this equals 1/2 perimeter which we found to be  pi r....set them equal

theta r + r + r = pi r     divide by r

theta + 1 + 1 = pi

theta = pi-2   radians

I hope I did that correctly !

Yes  

y=mx+b   where m = slope and 'b' = y-axis intercept (this is where x=0)