The first term of an arithmetic sequence is -3 and the fifteenth term is 53. What is the common difference of the sequence? A) 14/13
B) 25/7
C) 4​

Step-by-step explanation:

The nth term of arithmetic sequence is  

So:

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%

answer: -2+√x,-2-√x

i hope this , i don't know if you're looking for a pair or not.