A string of length 1.23 m vibrates in such a way that a standing wave with wavelength 0.820 m forms. What harmonic is the string vibrating at? 1. third harmonic
2. fourth harmonic
3. second harmonic
4. first harmonic

Abag contains 4 red, 7 blue and 5 yellow marbles. event a is defined as drawing a yellow marble on the first draw and event b is defined as drawing a blue marble on the second draw. if two marbles are drawn from the bag, one after the other and not replaced, what is p(b|a) expressed in simplest form? a. 7/16 b. 7/15 c. 14/16 d. 14/15

When 142 is added to a number the result is 64 more then 3 times the number. option 35 37 39 41

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.