Which multiplication problem is represented by the model? A)1/6*2/5
B)5/6*1/2
C)1/2*4/5
D)5/12*1/12

NEED HELP NOW

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)

1. evaluate 8x(2)y9(-2) for x=-1 and y=2 2. simplify the equation. -() 3. simplify the expression. [tex]\frac{5}{x(-2) y9(5)}[/tex]

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie