Which of the following equations has infinitely many solutions? 2x + 8 = -3.5x + 19

4 + 5x = 5x - 4

3(3x + 2) - 2x = 7x + 6

9(x - 2)= 7x +5

Please Show Work

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)

What are the first 4 terms in the multiplication pattern given by the formula 2×4n

Which type of graph would allow us to compare the median number of teeth for mammals and reptiles easily