8:15 or 8 to 15 would be the ratio because you compare 8 quarters to 15 coins.
Answer:
40%
Step-by-step explanation:
10/25= x/100
25x=1000
25 divided by 1000 =40%
P(sum = 6) = 5/36 ; P(sum = 12) = 1/36
expected payoff = (5/36)(5) + (1/36)(9) = $0.94
Answer:
C. 3, -7
Step-by-step explanation:
x^2 +4x-21 =0
Factor
What 2 numbers multiply to -21 and add to 4
7*-3 = -21
7-3 = 4
(x+7) (x-3) =0
Using the zero product property
x+7 =0 x-3=0
x+7-7=0-7 x-3+3=0+3
x = -7 x=3
Answer:
32/4
simplified is 8/1
Step-by-step explanation: