Answer:
the third one
Step-by-step explanation:
search up 30 - 60 - 90 triangle rule for references
Cause 400 divided by 10 is 40
20/28 are female. Since there are 8 male students you just have to subtract 28-8 and you'll get the female total.
6x+3-(8x-5)
=
-2x(x-4)
=
2x+8
=
p = 2
20,000 Hz = 2 × 10^4 Hz
150,000 Hz = 1.5 × 10^5 Hz
