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Im okay

rainstraw ur a regular on here can u ask #420 to leave?

420

Thank you so much! what is math?

not sure?? hope u get help

You can ask any question you want on here! 

can we ask you more questions

A rational Number is a number that can be evenly divided by a whole number. Such as 4. 4 can be divided evenly.  However, π cannot, because it cannot be divided by a whole number.

I think I got that correct.

I'm okay.

a photographer takes picture of a train wich is travelling at 49m/s if the camera takes 0.01 to take the picture how far does train travel in this time

Since the train is travelling at 49m/sec, that means that in 1 second the train travels 49 meters. So, in .01 seconds it travels:

49 x .01 =.49 meters or 49 centimeters.

I'm good. Wat bout u?

49 m/s * ( 1/100) s   =  0.49 m

Agreed

Volume of a Sphere.

Sphere_{surface area}   =  4 pi * r^2       where r is the radius

Ok, thanks

j=10

Use a calculator, man!

The answer is 20.

2 is your answer.

4x - 5y   = 20

x intercept....let y = 0    and we have  4x  = 20    so x  = 5

y intercept...let x = 0   and we have  -5y  = 20    so   y = -4

asin ( 185.85 / 375.75 )  = about 29.64°

[sin 150 - cos 120 + tan 210] /  [ sin 330 - cos 300 + tan 225]

[1/2 - (-1/2) + sqrt(3)/3 ] / [ -1/2 - 1/2 + sqrt(2)/2]  =

[ 1 + sqrt(3) / 3 ] / [ -1 + sqrt(2) /2 ] =

(2/3) [ 3 + sqrt(3) ]  /  [ -2 + sqrt(2)]    multiply top/bottom [ -2 - sqrt(2)]

(2/3) [ 3 + sqrt(3)] [-2 - sqrt(2) ] / 2  =

(1/3) [ -6 -2sqrt(3) -3sqrt(2) - sqrt(6) ] = about -5.3854

The stars are a way to rate the answer, whether they did it right or wrong. You can also rate questions for any reason, but the most used one is based on if the question is spam or if they actually posted a good question that they needed help with. I believe I explained that fairly well, but I bet Admin could explain it more, if you'd like to ask him. 

asin[sin^-1](185.85/375.75) = 0.517386937667