A simple 9th Grade Math Question. I need help. Any help will be appreciated. The soldiers at the parade lined up in a rectangle with 10 rows and 5 columns. You

need to choose three soldiers so that neither two of them stand in the same row or

in the same column. How many different combinations of such choices are there?

P. S. 19 points for this! Please do answer quick!

Answer this question! 30 points and brainliest! only if you know the answer.

Asif spent $745.10 on 13 new file cabinets for his office. small file cabinets cost $43.50 and large file cabinets cost $65.95. write and solve a system of equations to find the number of small cabinets and large cabinets he purchased. determine if each statement is true or false. 1. he purchased 5 small cabinets. true or false 2. he purchased 7 large cabinets. true or false 3. he spent $527.60 on large cabinets. true or false

Which of the following is true for the relation f(x)=2x^2+1