Two radar stations 2.5 miles apart are tracking an airplane. The straight-line distance between Station A and
the plane is 7 miles. The straight-line distance between
Station B and the plane is 9 miles.
a) What is the angle of elevation from Station B to the
plane?

Acertain population of bacteria demonstrates exponential growth doubles in size every 4 days. how long will it take the population to triple in size?

What is the missing step in this proof ?

Someone answer asap for ! the following statements are true about the coins calvin and sasha have collected. * calvin and sasha has the same amount of money. * calvin has only quarters. * sasha has dimes, nickels, and pennies * calvin has the same number of quarters as sasha has dimes. * sasha has $1.95 in coins that are not dimes. exactly how many quarters does calvin have?