Select all sets of measurements that represent side lengths of a right triangle.
a
3cm, 5cm, 4cm
b
4cm, 12cm, 13cm
С
20cm, 29cm, 21 cm
d
7cm, 24cm, 25cm
e
8in, 16in, 17in
f
3in, 6in, 4in
g 41 in, 40in, 9in

Evaluate the following expression 1/3^2

Yoku is putting on sunscreen. he uses 2\text{ ml}2 ml to cover 50\text{ cm}^250 cm 2 of his skin. he wants to know how many milliliters of sunscreen (c)(c) he needs to cover 325\text{ cm}^2325 cm 2 of his skin. how many milliliters of sunscreen does yoku need to cover 325 \text{ cm}^2325 cm 2 of his skin?

Aroulette wheel has 38 slots in which the ball can land. two of the slots are green, 18 are red, and 18 are black. the ball is equally likely to land in any slot. the roulette wheel is going to be spun twice, and the outcomes of the two spins are independent.the probability that it lands one time on red and another time on black in any order is(a) 0.5 (b) 0.25 (c) 0.4488 (d) 0.2244