How many solutions does this equation have?
7a + 5 (a + 3) = 8a + 4 (a + 2)

Step-by-step explanation:

1) Expand.

2) Simplify 7a + 5a + 15 to 12a + 15.

3) Simplify 8a + 4a + 8 to 12a + 8.

4) Cancle 12a from both sides.

5) Since 15 = 8 is false, there's no solution.

Therefor, this equation has no solution.

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.