Ella brought some keychains and spent a total of $24. each keychain cost the same whole dollar amount . she brought between 7 and 11 keychins how many keychains did ella bye

She bought 8 key-chains because when you divide 24 by 8 you get 3, which would be 3.00 dollars exactly and 3 multiplied by 8 equals you 24. each key-chain cost the same amount of 3 dollars.

10x

step-by-step explanation:

the greatest common factor 30 and 20 is 10

5 is a common factor of 30 and 20 but 10 is also a factor and 10 is greater than 5 so 5 will definitely not be apart of our answer

now the most amount of x's you factor our is just 1 factor of 1

so 10x the gcf of the terms in the polynomial

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%