E.g 20%
Remove % sign and divide the number by 100
20/100
1/4
Sin (pi/6) = 1/2
Tan (pi/4) is 1.
If you need to know why, leave me a comment!
Answer:
- 22
Step-by-step explanation:
let the number be n then 2(n + 9) is the sum of the number and nine doubled, thus
2(n + 9) = n - 4 ← 4 less than the number
Distribute parenthesis
2n + 18 = n - 4 ( subtract n from both sides )
n + 18 = - 4 ( subtract 18 from both sides )
n = - 22
The number is - 22
Length of the rope = 12 x 5 = 60 m
Length of each divided rope = 60 divided by 3 = 20 m
Therefore, each piece of rope is 20 m long.