(PLEASE HELP ASAP) Triangle DAC is isosceles with congruent sides AD and AC. Which additional given
information is sufficient for showing that triangle DBC is isosceles? Select all that
apply.

What is the standard deviation of the following data set rounded to the nearest tenth? 3, 17, 18, 15, 12, 21, 9

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?

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?