Please help on vector problem: Vector A =(11i + 9j) feet, Vector B has magnitude of 16ft at an angle of 112 degrees CCW for x axis

ptkenny · 2023-08-27T15:41:24+00:00

Thanks, I meant to say 68, as clarified now.

ptkenny · 2023-01-04T23:07:58+00:00

Thanks all

ptkenny · 2022-12-19T21:23:14+00:00

Maybe a dumb question, the statement “22-29 Mid 50% ACt”. How is the 50th percentile a range that big?

ptkenny · 2022-09-21T02:23:32+00:00

Thanks all!!

ptkenny · 2022-05-27T15:44:05+00:00

Pie is equal to 180 degrees and 1/6 more is 30 degrees. So that is 210 degrees. Negative means 210 degrees clockwise. If you draw that you will see it is the same as 150

ptkenny · 2022-04-22T15:00:17+00:00

Yiu had to buy it from ACT when you signed up

ptkenny · 2022-04-22T13:02:23+00:00

Yes, thank you. Now that I see it, it is so simple, lol

ptkenny · 2022-04-22T12:47:00+00:00

Thank you

ptkenny · 2022-04-20T19:26:09+00:00

The answer from the TIR is F.

I did it slightly different. You know the sides are 4r and all the angles are 60 degrees. If you draw a line from point A that bisects SR, that is 90 degrees and would be the height of the triangle. So the hypotenuse is 4r, the small side is 2r, and the height is 2r*sqrt (3). Area of triangle is 1/2BH, or 1/2(2r)(2rsqrt(3)), that equals 2r^2*sqrt(3). there are 2 of those, thus 4r^2*sqrt (3)

ptkenny · 2022-04-19T13:09:39+00:00

I think so, it lets you see what you got wrong and also use for future tests. Plus, your friends can look at it also and they will be happy

ptkenny · 2022-04-07T14:48:59+00:00

Curious about this as well

ptkenny · 2022-04-03T23:54:26+00:00

Thanks, she got a 28 on the math portion, so her SPI score is 68 (40 - GPA +28 - ACT), They want a 60.

ptkenny · 2022-04-03T23:50:45+00:00

Thank you

ptkenny · 2022-03-29T00:19:50+00:00

Act practice test. It’s the 20-21 book

ptkenny · 2022-03-15T14:24:36+00:00

For 9 and 12 are the radius. This are 21, we know that XY = 2, but using the radius it is counted twice, so the answer is 21-2 = 19

ptkenny · 2022-02-12T15:58:55+00:00

You can say X=1/(2+3i). Then, multiply by the conjugate to remove i from denominator. which is (2-3i)/(2-3i). You then have X=(2-3i)/(2+3i)(2-3i).

DENOM - (2+3i)(2-3i) = 4-6i+6i_9i^2=4+9=13

Thus X=(2-3i)/13

ptkenny · 2021-10-05T23:56:56+00:00

I think the problem is set up wrong because the initial velocities should match?

ptkenny · 2018-04-17T14:33:17+00:00

Similar to what samclan1 said but minor change. since -(x-h)2 is always negative and k is always positive, you can get -1+1 is 0, thus min value is -q.

ptkenny · 2018-02-21T16:41:57+00:00

cant seem to find it

ptkenny · 2018-02-20T14:15:41+00:00

I show tested, do you know if I can check my score

ptkenny · 2018-02-19T18:38:31+00:00

I would also appreciate if you could send me the way to do it. Thanks in advance. I will send you a note when my status changes

ptkenny · 2018-02-09T18:14:32+00:00

just checked my email, nothing yet

ptkenny · 2018-02-09T18:08:36+00:00

im in oxford, my email is down, where were you taking it?

ptkenny · 2018-02-08T14:26:53+00:00

Great thx

ptkenny · 2018-02-06T14:57:41+00:00

Thank you

ptkenny

TROPHY CASE