Wednesday
December 11, 2013

# Posts by Alan

Total # Posts: 320

Math
From an observation tower that overlooks a runway, the angles of depression of point A, on one side of the runway, and point B, on the opposite side of the runway are, and , respectively. The points and the tower are in the same vertical plane and the distance from A to B is 1...

math
Yes but why is it 45 degrees? I'm dividing 8 into 16 = .5 then cos-1 .5 = 60. Nothing I do is giving me 45 degrees. Hope you get notified when a thread is updated, I'm inclined to repost this incase. Thanks again for your great answering.

Mathematics
thank you

Mathematics
Hi, Can someone check this for me .. please A tuning fork has a wavelength 0f 136 centimetres. Given that the speed of sound is 340 metres per second what is the frequency of the tuning fork ?? Frequency = speed / wavelength Then 340 / 1.36m (136cm) = 250 Hz Thank you try to h...

math
2/27(x-3)√((x^2-6x+23)/y)rearrange the equation to make y the subject

algebra
collect all like terms 3x^2-5x^2+12y-3y+8x =-2x^2+9y+8x

Alegbra 1
the answer is distance over time. total distance is 1500 miles total time is 3.5 hours. 1500/3.5=428.57 mph.

maths
(a)(i)use the composite rule to differentiate the function f(x)=(x^2-6x+23)^(3/2). (ii)use the composite rule and your answer to part (a)(i) to show that the function g(x)=(x-2)/(x^2-6x+23)^(3/2) has derivative g'(x)=(5+9x-2x^2)/(x^2-6x+23)^(5/2). (iii)find any staionary p...

physics
An inflated basketball has a gauge pressure of 9.0 lb/in^2. What is the actual pressure inside the ball?

physics
A 70 kg person sits on a 3.6 kg chair. Each leg of the chair makes contact with the floor in a circle that is 1.5 cm in diameter. Find the pressure exerted on the floor by each leg of the chair, assuming the weight is evenly distributed.

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