What is the approximate percent change in a temperature that went down from 120 degrees to 100 degrees?
the percent change was 17%.
the percent change was 20%.
the percent change was 80%.
the percent change was 120%.

The answer is 17%

explanation:

One way to find percents is to multiply the number you're trying to find the percent of (120) by whatever percent you're looking for (0.17, 0.2, 0.8, etc) If you multiply 120*0.17, you'll get about 20, which is how much was the amount of degrees lost.

17 a

Step-by-step explanation:

  21.3

step-by-step explanation:

multiplying the given equation by c/sin(25°), we get

  c = 9/sin(25°) ≈ 21.2958 ≈ 21.3

we assume "c" is the length of ab, the side opposite angle c in triangle abc.