Wai and kuri were digging in the sand at the beach. was dug a hole that was 15 inches below the surface and kuri dug a hole that was 9 inches below the surface. find the difference in the depths of their holes.

Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.

The marked price of an article is 25% above its selling price and the cost price is 30% less than its marked price . find the discount percent and gain percent. only a brainlest can solve it i will mark you brainlest

What is the value of the expression i 0 × i 1 × i 2 × i 3 × i 4? 1 –1 i –i