Posts by iza
Total # Posts: 19
*repost* - Grade 11 math
Word problem: Wes saw fireworks at 28 degrees; Abby (who was standing 20 m away from him) saw the same fireworks at a 40 degree angle. Where was Abby standing? (The answer is 61.8m, but I don't know how to figure it out or sketch the triangle).
December 17, 2014
Gr 11 - math linear systems
Word problem: School is raising money for scholarships, with the goal of $16,000. The plan is to sell event tickets for $10, and give each person in attendance a ball cap. The cost of the caps is $2 each. Other expenses add up to $2,000. The organizing committee needs to know ...
March 11, 2014
I'm supposed to fill in a table. The angle of incedence in air is given (starting with zero degrees and then at 10, 20, 30, 40, 50 and 60 degrees. Using the sin function on my calculator, I'm supposed to figure out the angle of refraction in an acrylic block. Can ...
December 17, 2013
Gr 9 Science - physics
Thanks, that's what I thought. Did you happen to see Part 2 of this question? It is: If the current at one corner of the 12V series circuit is 1.0 A, what is the current at corner number three (all three resistors are the same).
January 16, 2013
A ski slope drops at an angle of 24 degrees with respect to the horizontal and is 500 m long. A 60 kg skier skis down from the top to the bottom of the slope. A.) Determine the change in gravitational potential energy of the skier+earth system. b.) If 20% of the gravitation ...
November 12, 2012
A pet store has various sizes of guinea pig cages. The diagram of the top of the cage has a width of 4.8cm and length of 6cm. what are the possible dimensions of this cage? A) 28in by 24in B) 28in by 18in C) 30in by 24in or D) 30in by 18in
March 13, 2012