7. Ansa bill at a clothing store came to $168.78 (no tax she bought shirts for $9.95 each, 2 dresses for $29.98 each and 2 pairs of jeans, the jeans cost the same amount as each other, how much was each pair?

this is a good question! i’ll do some research and what i find, i’ll contact you asap when i have something! ✊

answer: 1.06 km per sec

step-by-step explanation:

39.6 m=63.72 km

60 min in an hour so 63.72/60=1.06

there is only one way to arrange all the eight relative to each other because they are not distinct. we have

now there are nine places to place an (and not more than one in one place).   because we have four symbols, we need to choose four of these nine places to insert an . order does not matter because the are not distinct.

thus there are 1 · c(9,4) ways, or, if we calculate it,

thus there are 126 ways to form such "words."