Using appropriate properties find the value of 3/5×(-3)/10+1/15-3/5×1/5​

Write the system of equations represented by the matrix. 0 1 2 4 -2 3 6 9 1 0 1 3

1-for what value of x is line a parallel to line b 2-for what value of x is line a parallel to line b

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)