So... 2n>30 and 5n<100. So if you divide out 2 and 5, you get n>15 and n<20. Therefore 15<n<20
4x/16 - 3/8 - x/16 = 3/16
x/4 - 3/8 - x/16 = 3/16
3x/16 - 3/8 = 3/16
Add 3/8 on both sides
3x/16 = 9/16
Then multiply 16 on both sides
3x = 144/16
3x = 9
Divide 3 on both sides
x = 3
Answer: 51
Step-by-step explanation: (sqrt(2))^2 + 7^2
The squareroot and square cancel, leaving 2. 7^2=7*7=49
49+2=51
Answer:
(a) 30 & younger (no facial hair are 1,2,4,9. with facial hair are 10,12,14)
older than 30 (no facial hair are 3,4,8 . with facial hair are 6,7,11,13,15)