5+ 8 x 1 over 2 what is the correct order of operations for simplifying this expression

Part a : solve - vp + 40 < 65 for v . part b : solve 7w - 3r = 15 for r show your work!

In the figure shown below, m < 40 and ab =8. which equation could be used to find x?

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)