Alright, so we'd use the combinations with repetition formula, so we choose from 4 schools to distribute to and distribute 8 blackboards. It's then
( 8+4-1)!/8!(4-1)!=11!/(3!*8!)=165
For at least one blackboard, we first distribute 1 to each school and then have 4 blackboards left, getting (4+4-1)!/4!(4-1)!=7!/(4!*3!)=35
The answer is c. Because there are 3 times more blank marbles than white marbles.
Answer:
Communitive Property of Addition
Step-by-step explanation:
Example of Comunitive Property of Multiplecation:
a+b = b+a
Answer:idk why u ask? ? ? ?
Step-by-step explanation:
If we plug x = 3 into the equation we have
7(3) - 7 = 14
and
2(3) + 8 = 14
So the answer is C
