The number . . . . . N
The difference of the number and 9 . . . N-9
Seven times that difference . . . . . . . 7(N-9)
You said that 7(N-9) = 2 .
Divide each side by 7 : N - 9 = 2/7
Add 9 to each side: N = 9 and 2/7
Answer:
96
Step-by-step explanation:
And if you need an example this is the website I went to: http://www.mathsisfun.com/data/standard-deviation.html
Answer:
three fourths in the decimal formation is 0.75
Answer:
6 inches divided by 2/3 inches is 9, so 9 planks
Step-by-step explanation: