Which equation represents: "Two times an unknown integer, multiplied by the unknown integer minus two times a different unknown integer, equals 50." A) 2x2 + 4xy − 50 = 0 B) 2x2 − 4xy + 50 = 0 C) 2x2 + 4xy + 50 = 0 D) 2x2 − 4xy − 50 = 0

Step-by-step explanation:

Let the first unknown integer be x

Let the second unknown integer be y

answer: a and c are correct

step-by-step explanation:

the +5 is the vertical translation

the added negative symbol in front is the reflection over the y-axis

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%