by nsguy1350 » Thu Mar 15, 2012 6:37 pm
16. Remove the A,3,5,7,9 to get a deck full of:
2,4,6,8,10,J,Q,K. 32 cards total.
The probability that the first is a face card is [unparseable or potentially dangerous latex formula], and the probability that the second is a factor of eight is [unparseable or potentially dangerous latex formula]. Multiply those to get [unparseable or potentially dangerous latex formula], or D.
30. [unparseable or potentially dangerous latex formula], so k = 15, for B.
33.This is the power series for [unparseable or potentially dangerous latex formula]. You plug in 5, so [unparseable or potentially dangerous latex formula] is about -0.9589, which is C.
34. Put it in standard form (actually, a bit off standard form, but I do it that way), which is [unparseable or potentially dangerous latex formula], then your directrix will be k + p since this is a negative quadratic that opens down (no, that is not redundant, the rules for parabolas that are negative and are pointing left or in a another direction are different). If it opens down, k + p, up, then k-p.
45.[unparseable or potentially dangerous latex formula]
[unparseable or potentially dangerous latex formula]. Solve for c, to get $7360, or C.
47. This one was weird, I skipped and nobody here knows how to do it. It just sounds like it's a completely bad problem to me, unsolvable, but it might be and I can't help you here if it is solvable.
49. I put one force on the positive x axis, making the forces vectors. Then, one vector is at 0 degrees, and another is at 46.
[unparseable or potentially dangerous latex formula]. Take [unparseable or potentially dangerous latex formula] to get magnitude, which is D.369.
58. I did [unparseable or potentially dangerous latex formula], which gave me 12.75, or C. I didn't have to divide by 100, I just did because I neglected percents in the numerator.
Hope this helps! I'm off to TMSCA State tomorrow!
Also, today, I took 2 Math tests, '09 Region and State. I have a lot of work to do if I want to get to State this year... 248 on Region (43 right, 5 wrong, 12 skipped), 252 (45 right, 9 wrong, 6 skipped) on State.
2013 District 1/Region:
NS - 319/355
MA - 340/332
CA - 294/287
SC - 344/292
CS - 212/124 (fail)