# math

posted by .

The head of an industrial machine moves in a straight line horizontally backwards and forwards from a central position. The movement can be modelled using the sine wave d = 80 sin ( pie t), where d is the horizontal distance (in cm) from the central starting position, and t is the time after the machine starts running (in second).
choose the 2 correct statements about the motion of the machine:
a) the maximum distance that the machine head moves horizontally from its central starting position is 80cm
b) the maximum distance that the machine head moves horizontally from its central starting position is 40 cm
c) the machine head will make 50 complete cycles in a minute
d) the machine head will make 30 complete cycles in a minute
e) the machine head will make one complete cycle in half a minute
f) the machine head will make one complete cycle in 2 minutes.

I'm assuming its A and E. Anybody have a better idea if I'm wrong?

## Similar Questions

1. ### precalculus

graph y=sin(x-pie/4) (couldn't find pie sign on my keyboard) Use 3.1459 We can't draw graphs for you here, but you can certainly make a table of values of x and corresponding values of y, and draw the graph yourself. you might save …
2. ### maths

Choose the two options which are true for all values of x 1) cos (x) = cos ( x – pie/2) 2) sin (x + pie/2) = cos (x – pie/2) 3) cos (x) = sin (x – pie/2) 4) sin (x) = sin (x + 4pie) 5) sin (x) = cos (x – pie/2) 6) sin^2 (x) …
3. ### maths

The head of an industrial machine moves in a straight line horizontally backwards and forwards from a central position. The movement can be modelled using the sine wave d = 80 sin(pie t), where d is the horizontal distance (in cm) …
4. ### maths

The head of an industrial machine moves in a straight line horizontally backwards and forwards from a central position. The movement can be modelled using the sine wave d = 80 sin ( pie t), where d is the horizontal distance (in cm) …
5. ### math

The head of an industrial machine moves in a straight line horizontally backwards and forwards from a central position. The movement can be modelled using the sine wave d = 80 sin ( pie t), where d is the horizontal distance (in cm) …
6. ### math

The head of an industrial machine moves in a straight line horizontally backwards and forwards from a central position. The movement can be modelled using the sine wave d = 80 sin ( pie t), where d is the horizontal distance (in cm) …
7. ### maths

The head of an industrial machine moves in a straight line horizontally backwards and forwards from a central position. The movement can be modelled using the sine wave d = 80 sin ( pie t), where d is the horizontal distance (in cm) …
8. ### maths

The head of an industrial machine moves in a straight line horizontally backwards and forwards from a central position. The movement can be modelled using the sine wave d = 80 sin ( pie t), where d is the horizontal distance (in cm) …
9. ### maths

would it be number 6? The head of an industrial machine moves in a straight line horizontally backwards and forwards from a central position. The movement can be modelled using the sine wave d = 80 sin ( pie t), where d is the horizontal
10. ### science

Mary is driving on a straight road. Suddenly a deer jumps out in front of her. Mary turns her car to the left to avoid the deer. Which best describes what happens to mary's head position if she is wearing her seatbelt?

More Similar Questions