Matt has 20 pints of green paint he uses 2/5 of it to paint a landscape and three tenths of it while painting a clover he decides that for his next painting he will need 14 pints of green paint how much more paint will he need

Answer question above and explain each step : )

If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)

Asquare and an equilateral triangle have the same perimeter. each side the triangle is 4 inches longer than each side of the square. what is the perimeter of the square