How many solutions are there to the equation x2 - 7 = 0?
a) 1
b) 2
c) 4
d) 7
e) 14

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: 1400

step-by-step explanation: 20 x 5 = 100 add the zero 1000 8 x 50 = 400 + 1000 = 1400