What is 800 and 1000 converted in as a fraction

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

Joey is asked to name a quadrilateral that is also a rhombus and has 2 pairs of parallel sides.should be his answer

Abowl contained 270 starbursts of all different colors. if the probability of picking a yellow is 1/9, then how many yellow starbursts are in the bowl ? ?