Recent content by Stripe

Homework Statement (2 CIS (pi/6))*(3 CIS (pi/12)) Homework Equations Also what is CIS? I believe it's Cos+i*sin but how do you use it? The Attempt at a Solution i simplified it to 6 CIS (pi/12) How do i turn it into cartesian?

oh...i get it! Thanks that was really helpful. Let's hope that's what the jibbed question meant! thanks again

Homework Statement ok so on a practice test it states that: http://img4.imageshack.us/img4/797/98387316.png During its flight, the graph of the acceleration of a stone thrown is best shown by: Homework Equations The Attempt at a Solution Ok so basically there are 4 possible...

Now what would i tell myself if i could speak to myself when i was in high school? 1. Keep going. 2. Get Smarter. 3. Two more years left. Of course to tell myself that in high school i would just have to wait 2 seconds. (i'm in high school if you didn't realize already :D) i'm sucking all...

oh shoop da woop thank you guys so much! After deciphering some of your maths jingo, i got it! Thanks guys i really appreciate your help! and Mark a special thanks to you for replying to all my threads so hastily! Thanks guys :D

Homework Statement a cannon launches a projectile. H, is the height in metres that the cannon ball is above the horizon by t seconds. h= -0.75t^2 + 16t + 3 Homework Equations What is the maximum height reached by the cannonball? The Attempt at a Solution Ok so i tried completing...

= -3/4(t2 - 20t + 100) + 75 = -3/4(t - 10)2 + 75 So with that part where you completed the square, the + 75 is right because you do the opposide of -3/4 x 100? Like i thought you were supposed to do the opposite of what's in the brackets, (-100) but I'm assuming because the -3/4 you instead do...

sorry about that it's hard trying to write equations on the computer lol

Ahh i see thanks a lot :D

Homework Statement A basketball is thrown into the air, and it's height is determined by h = 3/4t(20-t) where t = time. Homework Equations What is the greatest height the ball reaches The Attempt at a Solution Ok so i tried to graph this out but stuffed up, a bit hard to show...

And so the TP of this would be (3,1) Thanks for all your help that's about it for now :)

Thanks a heap mark you cleared up a lot for me, but to clarify: ok so when you said "I'm adding 9 since I really added -9 earlier" you meant that in: -(x2 - 6x + 9) - 8 + 9 ^ Is actually a -9 because of the negative in front of the brackets? And in the transition between...

Homework Statement For the following questions, find the Domain and Range. Use either the graph or turning point method. Homework Equations 1. y= -x+6x-8 2. y= x^2-3x-5 3. y= -x^2+4x+4 And a question on the matter, when you complete the square, as in when I half the middle term...

Homework Statement Ok so for Diagram A: It is desired to set up an alarm to indicate when it is too cold. For this purpose the circuit shown is to be used and it is intended that the globe will go on only when the temperature falls below 18C. The positions A and B in the circuit are to be...

i really appreciate the help guys :D! sorry i know it is a small matter but i don't feel like i can continue unless i know everything >_<