Answer:
x = 20°
f = 40°
Step-by-step explanation:
4x + 5x = 180°
because a straight line is 180°
so 9x = 180°
1x = 180 ÷ 9
1x = 20
all angles in a triangle add together is 180°
so 7x + f = 180°
1x = 20
7x = 20 × 7
7x = 140°
f = 180° - 140 °
f = 40°
1 revolution = 360 degrees
3/2pi = 1 second
1 revolution = 2pi radius
3/2pi (360/2pi)= 3/2pi (180/pi)=270 degree sec.
Answer:
BM=CM bc of the definition of midpoint
AB =AC bc of the def of an isosceles triangle
and angle B = angle D becasur corresponding parts
Step-by-step explanation:
Answer:
it sin 60
Step-by-step explanation:
Y=MX+C C=1 0=m(1)+1 m=-1 Y=-X+1