A pilot flying an aeroplane at a certain constant height reported that the angle of depression of a lake was 28°.After flying 30km in the direction of the lake, the angle of depression became 42°.Find the height of the aeroplane.

How to write four times a number, minus 6,is equal to theee times the number+8 as an equqtion

Fatima plans to spend at least $15 and at most $20 dollars on sketch pads and pencils. if she buys 2 sketchpads, how many pemcils can she buy while staying in her price range? fatima can buy between and pencils. ? (type whole numbers. use ascending? order.)

(-y to the power of 2 - 4y- to the power of 2 -6 y +3)