Time limit
a jar contains 35 dimes and nickles the total value of the coins is $2.50 if d= the number of dimes and n= the number of nickles this is the system of equation
d+n=35
0.10d+0.05n=2.50
how many of each type of coin are there solve the system to answer the question

Factor the expression using the gcf. the expression 21m−49n factored using the gcf

Which expression is equivalent to -5(3x - 6/7)

An incoming airplane is x miles due north from the control tower at an airport. a second incoming airplane is y miles due east of the same control tower. the shortest distance between the two airplanes is z miles. which of the following functions would best model the situation above?