+225 Use the formula to find the 19 square number.
The 19 square number is =
It will take seconds to walk from the first floor to the sixth floor.
The answer would be if she had worked the problem correctly.
+128407 19^2 = 361
Each floor takes [ 51] / [ 3 - 1] = 51/2 = 25.5 seconds
So....... from the first to the sixth - 5 floors - takes 5 * 25.5 = 127.5 seconds
Cindy was asked by her teacher to subtract 3 from a certain number and then divide the result by 9. Instead, she subtracted 9 and then divided the result by 3, giving an answer of 40. What would her answer have been if she had worked the problem correctly?
[ N - 9] / 3 = 40 multiply both sides by 3
N - 9 = 120 add 9 to both sides
N = 129
So....the correct answer should be
[ 129 - 3 ] / 9 = 126 / 9 = 14
