Is a triangle possible with angle measures of 45 degrees, 65 degrees, and 70 degrees?

This is different from the first one can someone me

James adds two numbers a + b. sally adds the same two numbers but reverse the order b + a what property of addition assures us that james and sally will get the same sum

If the cost to mail a package is an initial $5 and $0.28 for every pound the total cost to mail a package was $11.27, how much did the package weigh?