Ethan, Alexis and Daniel keep money in metal banks. Ethan, Alexis and Daniel count the money in their metal banks. Ethan has twenty-six dimes in his bank. Daniel has twenty-six pennies in his bank. Alexis has twenty-six one-dollar bills in her bank. Daniel thinks they have the same amount of money because they all have the same number of coins or bills in their banks. Ethan says Alexis has ten times what Ethan has in his bank and that Daniel has one-tenth what Ethan has in his bank. Alexis is not sure Ethan is correct. Alexis thinks Ethan has one-tenth of what she has in her bank and ten times what Daniel has in his bank. Who is correct? Show all your mathematical thinking.

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

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 u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?