Consider the two triangles. To prove that the triangles are similar by the SAS similarity theorem, it needs to be shown that
PLEASE HELP.. extra coins

in 1995, potato plants were taken into space aboard the space shuttle columbia.

step-by-step explanation:

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."