Only 4% of people have type A B blood what is the probability that at most 5 people will have to be checked before first finding someone with type A B blood

What two criteria are needed for triangles to be similar

Daniel expanded the expression as shown below -2(-8x-4y+3/4)=-10x-8y-11/4 what errors did he make? check all that apply

Koji is installing a rectangular window in an office building. the window is 823 feet wide and 534 feet high. the formula for the area of a rectangle is a=bh. what is the area of the window? enter your answer as a mixed number in simplest form in the box. $$ ft2