<p>The answer was like 11.2. I think the choice was D.</p>
<p>You had to calculate the y-direction and the x direction, then it made another triangle and then you calculate hypotenuse/resultant.</p>
<p>what was the answer to the last question?</p>
<p>@iloveithaca
the ans to the last question was abs (sec x).</p>
<p>for the magnitude of the vector… i disregarded the angle and just found the square root of 4 squared plus 16 squared and got 8.9… probably wrong :(</p>
<p>thanks, and was the center of the circle, (3, -2)? i think choice C i don’t remmeber</p>
<p>answer to vector was like 10.2
resultant squared = 8(squared) + 4 (squared) -2(4)(8)(cos130)</p>
<p>oh, i know what i did wrong, i somehow convinced myself that the vectors made a right angle… even though the problem said 50 degrees… im an idiot</p>
<p>@ ithaca girl
yes that was the answer. C was the choice for that.</p>
<p>did anybody else get 7280 for the one with the different combinations of students at the end?</p>
<p>@pianoman</p>
<p>thats what i got</p>
<p>phkc, you are correct, except the answer to your equation is 11.2. 11.2 is the answer!</p>
<p>how did you solve the one with the equidistant equation on the xyz plane </p>
<p>I also had no idea about how to do the probability one adding up to 7</p>
<p>Guys, I took Math II in Oct. and it was extremely hard as well. I guessed 10 and in the end left 2 blank (was sure I got 700) but in the end I got 800. Don’t worry the curve will be terrific if it’s as hard as you guys say it is.</p>
<p>what was the answer to the standard deviation problem? i think that’s the only one i was unsure about. guessed answer A (0.1)?</p>
<p>since (1,1,3) and (1,2,3) are on the same x and z axis, the y value at which the distance between the two points is always equal is 3/2. Or the average of 1 and 2.</p>
<p>i got .1 for the standard deviation and 1/2 for the equidistant problem</p>
<p>*yea i mean 3/2 for equidistant problem</p>
<p>Cool thanks! but the two probability ones (the one adding up to 7 and the one with the science bottles or w/e) really messed me up :(</p>
<p>wait for the one adding up to seven, was it 0.06?</p>
<p>cause there are 6 ways to make 7?</p>
<p>1/6, 2/5, 3/4, 4/3, 5/2, 6/1
and 10x10 possible ways. 6/100 equals 0.06? is that right?</p>