20u2 – 28u 15x + 12y – 60
25a – 30ab + 15ab2
x 2 + xy + xz + yz
21ax + 35ay + 20y + 12x
152x 2 yz + 114xyz 2
30m2 n2 + 75mn2 – 105mn3
28pq2 r – 21p2 qr 2 + 14p3 qr + 7pqr k). 24abc – 30abd – 18b2 c + 36b2 d
ab + ab2 c 2 – ab + ab2 c
17m6 n6 – 51m4 n4 + 85m2 n2}

Aplane intersects a pris paralel to the base of the prism. the cross section is a polygon wth eight sides. how many sides does the base of the prism have? a. 10 b. 8 c. 7 d. 9

If it 8 inch candle burns at 7/10 inch per hour and a 6 inch candle burns at 1/5 inch per hour after how many hours would both candles be the same height

The coverage of a base station of a telecommunication company forms a disk with a radius of (kilometers). let be the distance of a cellphone from a base station. assume that the location of cellphones in use are randomly uniformly distributed within the disk. calculate the mean and variance for the random variable.