Find Sn for the arithmetic series in which a1 = 4, d = 3, and an = 61.

8y^50

step-by-step explanation:

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%

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

damm bro the struggle

step-by-step explanation: