There are 20 people at a party 2 are best friends. What is the possibility of them both being pretty?

Can u guys do this ratio question. this is extremely urgent a tap is leaking water at a rage of 1l every 8 hours. how long will it take for the tap to leak a total of 300ml?

Find the greatest common factor of -30x 4 yz 3 and 75x 4 z 2.

Estimate the area under the curve f(x) = 16 - x^2 from x = 0 to x = 3 by using three inscribed (under the curve) rectangles. answer to the nearest integer.