Answer:
P(2 quarters) = 19/ (13*16) = 19/208 = 0.0913
Step-by-step explanation:
probability of getting 2 quarters?
ok
first draw: there are 20 quarters to choose from
second draw: there are 19 quarters left to choose
so Total coins are 65 coins
P(2 quarters) = P( 1st quarter)* P(2nd quarter)
P(2 quarters) = 20/65 * (19/64)
P(2 quarters) = 4/13 * 19/64
P(2 quarters) = 19/ (13*16) = 19/208
Number of ribbons that can be cut = 6 ÷ 1/2
Number of ribbons that can be cut = 6 x 2/1
Number of ribbons that can be cut = 12
-----------------------------------------------------------------------------------------
Answer: 12 1/2 foot pieces can be cut from 6 feet ribbon
-----------------------------------------------------------------------------------------
5(a + 3b) = 5(9 + 3(2)) = 5(9 + 6) = 5(15) = 75
15*15=225. There's only one square root of 225... there's only one square root of any number ...
