in cuBul ABCDA'B'C'D' , distanta de la mijlocul M al muchieiCC' la planul (D'DB) este de 3 radical din 2 .Calculati a) aria sectiunii diagonaleD'B'BD b) d(M;A'D') c) cos unghiului (MD'B);(DBC)

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

What is the anwers for 9+2x=5x-3-x

What is r i 4.5+10r=-6.5 with work pls