Justin Posted December 10, 2006 Posted December 10, 2006 You just move the graph of y=x^2 +5 units along the x-axis. It's easier than you think. Take it easy. I'm quite weak in geometry in actually, but I think it's quite interesting.
Radiance Posted December 10, 2006 Posted December 10, 2006 Well the teacher helped us, he was like qypx... if an equation is like this y=(x-p)squared <- well thats a formula lol, well teh p= x and another formula is y= x+ q the q=y get it.... zomg we had to figure out the vertex and like x-intercept and stuff.. i get it when we do the worksheet but once the tests come.. geez i freezee upp :mellow:
Guest Merry HBK Xmas! Posted December 10, 2006 Posted December 10, 2006 Ok: A ladder 12 meters long leans against a building. It rests on the wall at a point 10 meters above the ground. Find the angle the ladder makes with the ground.
Awesome_Paul Posted December 10, 2006 Posted December 10, 2006 hehe thats well lucky, i been cleasring out my room and found my maths set including my bedy rular hehe, now where is it, hopefully no-one have answered in 10 minutes EDIT: yay found it, now to draw it then measure, i used to be amazingly good at these EDIT: YAY Fin, Okay i work it as 56 and a tiny part so in the first half, im gonan guess 56 nice even number
Guest Merry HBK Xmas! Posted December 10, 2006 Posted December 10, 2006 TI-82 screen: sin-1 (10/12) = 56.44 Trigonometric Ratios Table: sin 56o = 0.8290 sin 57o = 0.8387 By either answer, after rounding to the nearest degree, the answer is 56o. Co...co...correct...! And I haven't even learned Trigonometry yet... You win a prize!
Awesome_Paul Posted December 10, 2006 Posted December 10, 2006 i thought you said this was on your test??
Guest Merry HBK Xmas! Posted December 10, 2006 Posted December 10, 2006 i thought you said this was on your test?? Not this one, only the first exercice. Now for another (sorry, but no prize this time) from my test now: 8) Mr. Barroso makes Arriaiolos tapestries. Working 3h per day he takes 4 weeks to make one. The next order is for 3 weeks ahead. How many hours per day should Mr. Barroso work then?
Awesome_Paul Posted December 10, 2006 Posted December 10, 2006 3 (hours) x 7 (days in week) = 21 (Hours a Week) 21 (Hours per Week) x 4 (normal time) = 84 84 (Hours per 4 Weeks) / 3 (Weeks till deadline) = 28 (hours a week) 28 (Hours a Week) / 7 (Days in week) = 4 He would have to work Every day for 4 Hours to finish in 3 weeks
Radiance Posted December 10, 2006 Posted December 10, 2006 This one takes a whilee. And u kno the other one, the triangle one. Couldnt u have done that problem doing it by the Pythagorean theorem?
Izzy ♥ Posted December 11, 2006 Posted December 11, 2006 No you couldn't, Radiance. Pythagorean theory is for working out the lengths of sides only - you need SoHCaHToa for angles :)
Radiance Posted December 11, 2006 Posted December 11, 2006 But but.. if i found out the length of the ground right using PT, and yeah.. and ops nvmm i was thinking about the length heeh my bad. whoa i nvr learned that type of math b4. Wht grade are u HBK? if u dun mind saying it.
Superfly Posted December 11, 2006 Posted December 11, 2006 You could use the Pythagorean Theory to solve the one side, then you would have to use SoHCaHToa for angles. So in a way it could help you, but its not needed.
Awesome_Paul Posted December 11, 2006 Posted December 11, 2006 Radiance, by lookicn gta the 1st post i say the 9th, the first question was taken from his test the day before he set it and it had 9th grade maths test?
Guest Merry HBK Xmas! Posted December 11, 2006 Posted December 11, 2006 Radiance, by lookicn gta the 1st post i say the 9th, the first question was taken from his test the day before he set it and it had 9th grade maths test? Yep, I'm 9th grade! Pythagorean theory is quite simple, though. More coming, and the last problem is correct! But you can use the three simple rule: 3 - 4 3 - x x = 3x4/3 = 4h x = 4h
Radiance Posted December 12, 2006 Posted December 12, 2006 Omg ur grade 9? I never learnt trigonometry when iw as in grade 9 [ im in grade 10 now]. Omg what a coincidence, our next unit is on trigonometry, we just finishing up congruency and how to find out the angles on a triangle [ i forgot what the unit is called lol]
Radiance Posted December 16, 2006 Posted December 16, 2006 Me twoo i want another ! hopefulyl i be the first one to post the answer lolz.
Superfly Posted December 16, 2006 Posted December 16, 2006 Me twoo i want another ! hopefulyl i be the first one to post the answer lolz. Not if i'm on at the same time, :P
Recommended Posts