Recent content by bigmac

Homework Statement In triangle PQR, 3SinP + 4CosQ = 6 and 4SinQ + 3CosP = 1. a) Find sin(P + Q). b) Determine the measure of angle R, in radians. The answer given for part a) is 1/2 and part b) pi/6 Homework Equations Sin (A+B) = SinACosB + CosASinB The Attempt at a Solution Thats...

Homework Statement - The following table gives the population of a city over time: Homework Equations I know this equation: y = a(b)x and exponential growth: b = 1 + growth rate and b = 1 - decay rate The Attempt at a Solution I know from back in chapter 2 that first...

yeah that works but, how did you take 2x as the LCD? don't you just multiply the denominators to get the LCD? And when you take 2x as a LCD, you cross multiply the left side right? I get 120x + 60x / 2x = 6...how did you get 120/2x + 60/2x...

Homework Statement Andrew won a two day bicycle race. He traveled 60km each day and his average speed on the second day was double that of the first day. If Andrew rode for a total of 6 hours, what was his average speed each day? a) state an equation that models this problem. b) Solve the...

Homework Statement A 1200kg car skids with uk = 0.45. If it skids 45.2m, find the thermal energy and the initial speed. m = 1200 kg Vi = ? Vf = 0 m/s (i think..because it wants to stop) uk = 0.45 (coefficient of friction) delta d = 45.2m Homework Equations Well for Frictional...

I wasn't begging for an answer. I just didn't understand it...I'm still confused

So, you're saying that the fewest sats are visible when they are at the equator? can you explain it please! thanks!

anything?

umm the spot between the north and the south pole? I'm not sure if I understood you correctly...

Homework Statement I'm suppose to explain that... Homework Equations none... The Attempt at a Solution Well I tried to explain it but I'm not sure if its right. I think that if you are near the south pole, there would be less satellites visible because the population that uses...

Homework Statement A tree house has a vertical "fire pole" of smooth metal, designed for quick exits. A child of mass 35.7 kg slides down the pole with constant acceleration, starting from rest. The pole is 3.10m high. The journey to the ground takes 2.00s. a) what is the magnitude of the...

Umm I tried doing it but I can't get the diagram right lol...part C is confusing me. I guess you'll have to wait for someone else to reply sorry..we just started these kinds of problems too and I did a similar one but I just don't get the diagram for this question. Vectors and components...

Hey, I think I sort of know how to do this. I did something like this before using components. Basically you have to add all three components and you can then find the displacement. displacement would be square root of the sum of x component squared + the sum of y component squared

this is how I did it...is this right?

AWESOME! I know how to do that. I did a lot of those where you add the x and y components to get the resultant displacement or velocity. And yes my diagram is a head-to-tail diagram. Ill do it that way. So the velocity I get will be the velocity compared to the bottom? I'll post my final answer...