If the stack is 21ins and each board is 1 3/2 ins thick that means you 21/(1 3/2) so you end up getting 8.4. Because you can't have a part of a board you round the number down to 8 boards.
Answer:
18
Step-by-step explanation:
9 = ( 1/2 + 1/2 ) 18
Answer:
Equal chords are subtended by equal angles from the center of the circle. A chord that passes through the center of a circle is called a diameter, and is the longest chord.
Step-by-step explanation:
Answer: GCF of 40 and 42 is 2
