Answer:
15 hours
Step-by-step explanation:
15x-(9x+20)=>150;x =>28.33
Step 1: Open the brackets
Step 2: Bring the similar variables together
Step 3: Simplify by adding/subtracting the coefficients of the similar variables
Step 4: Rearrange as required.
List of the first 1000 perfect squares! ... 25, 5 * 5 . 36, 6 * 6. 49, 7 * 7. 64, 8 * 8. 81, 9 * 9. 100, 10 * 10. 121, 11 * 11. 144, 12 * ... 841, 29 * 29.