An urn contains balls numbered 1 to 15 a ball is chosen returned to the urn and the second ball is chosen what is the probability that the first and the second of all will be a six

Step-by-step explanation:

An urn contains balls numbered from 1 to 15

Total number of outcomes= 15

Let E1 be event of getting a ball numbered 6

Favorable case to E1= 1

Probability=

P(E1)=

A ball is chosen and returned to urn

Again, total number of outcomes=15

Let E2 be event of getting a ball numbered 6

Favorable case to E2= 1

P(E2)=

The Probability that the first and second ball is 6=P(E1)+P(E2)

=+

=

Hence, the correct answer is

fahrenheit

step-by-step explanation:

fahrenheit is more precise than celsius. the ambient temperature on most of the inhabited world ranges from -20 degrees fahrenheit to 110 degrees fahrenheit—a 130-degree range. on the celsius scale, that range is from -28.8 degrees to 43.3 degrees—a 72.1-degree range. this means that you can get a more exact measurement of the air temperature using fahrenheit because it uses almost twice the scale.

-2x + 7 = 7

subtract 7 from both sides.

-2x = 0

divide both sides by -2.

x = 0