Answer:
diameter 8
and i think the circumference is 25.12
Step-by-step explanation:
4+4=8
3.14(8)
Answer:
y=2x+1
Step-by-step explanation:
Y intercept is 1 and slope is 2/1
Answer:
the angle is changing at a rate of 0.0375 rad/s when the time is t=8 seconds
Step-by-step explanation:
since the line D that starts from the spectator and follows the plane has the following equation
D² = x² + H² , where H= altitude of the plane , x= horizontal distance
then for x=v*t , where v=speed of the plane and t=time since the plane has passed overhead , we have for the elevation angle
tan θ = x/y = v*t /H
θ = tan⁻¹ ( v*t /H)
the rate of change in the angle of the spectator's sight θ with the time is
dθ/dt = 1/1+(v*t /H)² * (v/H) = (v/H)/[1+ (v/H)²*t²]
for t=8 seconds
dθ/dt = (875 ft/s/21000 ft)/[1+ (875 ft/s/21000 ft)²*(8 s)²] = 0.0375 rad/s
therefore the angle is changing at a rate of 0.0375 rad/s when the time is t=8 seconds
Answer:
2.4
Step-by-step explanation:
3 3/4 = 3.75
9/3.75 = 2.4
All your doing here is 37-19 adding negative is the same has munising
So 37-19=18
