How many different 4-digit PIN codes are there that only include the digits 3, 4, 6, 7, 9 and 2 if each of those digits is only allowed to be used once?

Which expression is equivalent to 4 square root 6 divided by 3 root 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?

In the diagram, gef and hef are congruent. what is the value of x