Answer:
Step-by-step explanation:
both angles must add up to 180 so
6x+12+3x+63 must =180
= 9x+75
9x+75=180
-75 -75
9x=105
x=11.66
meaning A is approximately 81.96
Answer:
I believe it is 40% since there are 4 marbles within the bag!
Step-by-step explanation:
solution:
A and B have 26 cards which are 7 spades and 19 non spades.
C and D have 6 spades and 20 non spades.
13 cards are chosen randomly from 26 cards (6 spades and 20 non spades)
probability of choosing exactly 4 spades is given by
(6 / 26) × (5/ 25) × (4/24) × (3 / 23) = 3/2990
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