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Please help with the following: Given: 2% professional cyclists have taken an illegal substance in the past 6 months The test only produces positive or negative results 90% cyclists that have taken an illegal substance in the past 6 months will test positive 1% cyclists who did not take any...

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Hi, Can someone please help with this question: A small company has 55 employees: 4 senior executives, 15 managers and 36 non-executives. A group of 5 employees are chosen at random, what is the probability that there are exactly 2 senior executives in the group? Answer: 0.036 Thanks!

Hi everyone, I graduated in 2021 with an internal rank of second for chemistry and fourth for biology (as attached). I am selling detailed study notes for both subjects: $6 per module $20 for all four modules of either biology OR chemistry (modules 5-8) $30 for full course biology AND...

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Hey guys, The attached are a few questions I need help with. Any help is appreciated. Thanks!

TY!!

tysm

A small finishing boat can travel at 8km/h in still water. It is being steered due east, but there is a current running south at 2km/h and a breeze blowing the boat south west at 4km/h. Find the resultant velocity of the boat, giving the speed correct to 2dp and the direction correct to nearest...

Ohhhhh that was silly ahahahaha. Thank you!!!

Hi guys, I’m wondering if anyone could check what I’ve done wrong for part c of the attached question as I got 3/2 for both alpha and beta while the answer says 2/3. Thanks!

I’m not sure, but this is the diagram they provided. The letters on there are just me trying to figure out the question.

Thanks :)

Hi guys, It'll be much appreciated if anyone could me with any of the below question. Thanks to all!! Note: please prove all the below using vectors. 1. In any trapezium ABCD, show the length of MN (which connects the midpoints of the parallel sides of AB and CD) must be half the sum of AC and...

Unfortunately no, sorry about that.

I’ve written exactly what the question says, please check out thread 9 for a photo of the original question if that would help. Thanks!

thanks!!

1. Given a=(3,4) and b=(2,1), find the area of the triangle formed by a, b and the projection of b onto a. ANS: 1 (note: bolded letters are all vectors) 2. Given a=(3,4) and b=(2,1), find the area of the triangle formed by a, b and the projection of a onto b. ANS: 5 Can someone please explain...