In trapezoid abcd with bases ab and dc, the diagonals intersect at point o. prove ao/ac = bo / bd

there would only be 50 odd numbers between 1 and 100 so therefor there would be 50 even so that would only be 50 odd numbers.

there still no table

12r - 8 - 12

you have to combine like terms. below i have bolded the like terms:

12r - 8 - 12

together it combines to:

12r - 20

hope this !