The sum of three consecutive integers is 84. What are the three numbers? number 1:

number 2:

number 3:

If a and b are the measures of two first quadrant angles and sin a = 4/9 and sin b = 2/5 find sin(a+b).

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

Write the expression as a single natural logarithm. 2 in a - 4 in y