Two similar pyramids have base edges 3 and 5. Find the following (use a colon between the numbers): a) the ratio between their altitudes =

b) the ratio between their base areas =

c) the ratio between their lateral edges =

d) the ratio between their volumes =

e) the ratio between their lateral areas =

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!

Suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet.