The sum of two numbers is 12. the first number, x, is twice the second number, y. which system of equations could be used to find the two numbers?

3y = 12 .

Step-by-step explanation:

Given : The sum of two numbers is 12. The first number, x, is twice the second number, y.

To find : Which system of equations could be used to find the two numbers

Solution : We have given

According to question

Sum of two numbers is 12.

Let first number =  x

Second number = y

According to question  

x = 2y.

Sum of two numbers is 12

x + y = 12

2y+ y =  12 .

3y = 12 .

Therefore, 3y = 12 .

a

step-by-step explanation:

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.