Recent content by gina4930

I did not even think to put it without a minus sign. Thank you. Thank was the correct answer. I greatly appreciate it.

I tried that and it made no difference. I am going to approach my Professor about it and hopefully she will help me.

I solved for y using the original equation. I thought using (533)^1/2 is more accurate then putting 23.1.

I did what you said and got the answer of -.183, which I already tried and it was wrong. I tried .183 and it is still incorrect. I don't know what I'm doing wrong. Do you have any suggestions?

When I differentiated the equation, I got: 1/2(x^2+144)^-1/2*(2x*dx/dt) + 1/2(y^2+144)^-1/2*(2y*dy/dt)=0 then I substituted in x=-5 , dx/dt= -2.5 , and y= (533)^1/2 When I solved for dy/dt I got two totally different answers. The first time I got -1.08 and the second time I got -.04. According...

Mark44- x represents the length of the ground. I think it means that x=8 at that particular moment Dick- What is the more accurate way to find sin(theta)? I don't know what the correct answer is supposed to be. It's an online problem so I would assume it needs to be as specific as possible. My...

I'm not too sure where to go with this but I think I got the start: (x^2+12^2)^1/2+(y^2+12^2)^1/2=39 Can somewhere tell me if this is right and where to go from here?

dx/dt=1.1 ft/sec x=8ft cos(theta)=x/10 -sin(theta)*dtheta/dt=1/10 * dx/dt -sin(.644) * dtheta/dt=1/10 * 1.1 dtheta/dt=-.183 I'm not getting the correct answer. I don't know what I'm doing wrong. Help!

Two carts, A and B, are connected by a rope 39 ft long that passes over a pulley P (see the figure). The point Q is on the floor h = 12 ft directly beneath P and between the carts. Cart A is being pulled away from Q at a speed of 2.5 ft/s. How fast is cart B moving toward Q at the instant when...

A ladder 10 ft long rests against a vertical wall. If the bottom of the ladder slides away from the wall at a rate of 1.1 ft/s, how fast is the angle between the ladder and the ground changing when the bottom of the ladder is 8 ft from the wall?