Find the value of a and b, when a + b √15 = √5+√3 (by) √5-√3

An airplane travels at an unknown elevation before it descends 3 miles to an elevation of 15 miles. find the elevation of the plane before its descen.

Which question is not a good survey question? a.don't you agree that the financial crisis is essentially over? 63on average, how many hours do you sleep per day? c. what is your opinion of educational funding this year? d.are you happy with the availability of electronic products in your state?

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x