Solve the system of equations 9x – 4y = -3 and - 7x + 5y = -9 by combining
the equations.

The polynomial function of least degree with a leading coefficient of 1 is: f(x) = x3 + ax2 + bx + c

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)

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2 acellus answer