If 2/3 of the cards are face-up, then 2/3*12=8 cards are face-up. The remaining 12-8=4 cards are therefore face down.
Because it states that for every amount of something there is a certain amount based on something else. For example, for every apple i have, i will have two bananas. This will go into the ratio 1:2. Hope this helps☺
A=4,
b=3,
c= 2
a² + b² -2abcosC =c²
a² + b² - c² = 2abcosC
2abcosC = 4² + 3² -2² = 16 + 9-4= 21
Answer : B.21
$58 is how much he has in his account
1.) 40, 2.) 8, 3.) 18, 4.) 15, 8.) 12, 9.) 30, 10.) 72, 11.) 36
