Math Answers

if a circle of radius 5 was centred on the point C(3,8), if two points on the edge are A(6,4) and B(-1,11): prove that both A and B are points on the edge of the circle

Prove that sin(A+B)/sin(A-B)+cos(A+B) +cos(A-B)/sin(A-B)+cos(A+B)=tan(phi/4 +B)

If two no selected at random from the nos 1,2,3,4 determine the probability that their sum is odd when they are selected together and one by one with replacement

evaluate the following using Beta function:

I=integration(dx/sqrt(1-(x)^n)) limits: from zero to one

thanks in advance.

Which sample size will produce a margin of error of ±4.1%?

856

595

782

362

evaluate the following using Beta function:

I=integration(dx/sqrt(1-(x)^n)) limits: from zero to one

thanks in advance.

write the equation for the parabola that would represent the location of the cold front at 11:00pm.

From a lighthouse L an aircraft carrier A is 15km away on a bearing of 112 degrees and a submarine S is 26 km away on a bearing of 200 degrees. Find
a) the distance between A and S
b) the bearing of A from S

The data of an experiment to apply sufficient quantities of fertilizer to optimize vegetation growth (grass yield) and avoid excessive application that could lead to runoff and nutrient enrichment of a nearby lake is shown in the data below. Determine the regression of y on x.
y- 25- 50- 75- 100- 125- 150- 175- 200- 225- 250.
x- 84- 9 - 90- 154- 148- 169- 206- 244- 212- 248.

dB/dx=B/t2
t is constant.if we solve this we get
B=B0 ex/t+B0e-x/t
if the graph is DECAYING EXPONENTIALY then can we ignore the B0 ex/t term?