Between which two ordered pairs does the graph of f(x) =
x2 + x - 9 cross the negative x-axis
O (-6,0) and (-5, 0)
O (4,0) and (-3,0)
O (-3,0) and (-2, 0)
O (-2, 0) and (-1,0)

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)

Find the missing variable for a parallelogram: a = latex: 32in^2 32 i n 2 h = b = 6.3 in (1in=2.54cm)

Find the arc length of the semicircle. 7the grade