Does anyone know how to do this? if so, can you explain it?

Step-by-step explanation:

You have to solve for the varible which in this case is 2.

1/2n+7=(n+14)/2

multiply both sides by 2

n +14=n+14

subtract 14 from both sides

n=n

this expression is true

answer:

step-by-step explanation:

here, the total dishes = 10

dishes having meat = 3 ( chicken, meatloaf and hamburger )

thus, the probability of having meat on the chosen dishes = number of dishes having meat / total dishes

=

therefore, the probability of not having meat = 1- the probability of having meat on the chosen dishes

=

=

=

⇒ option b is correct.