Determine if the sequence below is arithmetic or geometric and determine the common difference / ratio in simplest form.
45, 15, 5, ...

What scale factor was applied to the first rectangle to get the resulting image interior answer as a decimal in the box

What is the length of the midsegment of a trapezoid with bases of length 15 and 25 ?

Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g