6 times 2 is 12. B is than answer
The measure of angle 6 is 84 :)
Average speed =
(total distance covered) / (time to cover the distance).
Total distance covered = (58km + 80km) = 138 km
Time to cover the distance = (4hr + 4hr) = 8 hours
Average speed = 138km / 8hr = 17.25 km/hour .
(That's less than 11 mph. You could bike there faster!)
I assume 60 is the circumference of the circle.
if you sketch the graph, you will see that the radius from the center to the base, half the base, and the line segment form the center to one of the bottom vertex form a 30-60-90 degree triangle, the shortest leg is the radius of the circle, r.
the longer leg is √3r, and the hypotenuse is 2r.
the base of the triangle is 2√3r.
find r: 2πr=60, r=60/2π
2√3r=2√3*60/(2π)=60√3/π=33
-97 - 90g + 89g = 51 + g
-97- g = 51 + g
-97 - g - g = 51
-2g = 51 + 97
-2g = 148
g = -74
