13, because 78 postcards divided by 6 cards per board = 13 poster boards
X and Y can almost be any number and long as the statement 'equal to' is true the equation is correct.
Your answer will be:
The total number of marbles that are not black.
Answer:
1000
Step-by-step explanation:
Round the 6 in 600, this is 1 significant figure.6 rounds up to 10 making 1000
Answer:
it will be 44 degree because all angles in rhombus are equal
