Which of the following is an example of a ratio equal to the ratio 12: 4? a. 3 cookies, 1 sugar cookie b. 6 total cookies, 3 cookies c. 9 total cookies, 6 cookies d. 12 sugar cookies, 9 cookies

A

the ratio 12 : 4 simplifies to 3 : 1

ratio of A is 3 : 1

ratio of B is 2 : 1

ratio of C is 3 : 1

ratio of D is 4 : 3

A.

Step-by-step explanation:

let's solve your equation step-by-step.

4x+2=2x+12

step 1: subtract 2x from both sides.

4x+2−2x=2x+12−2x

2x+2=12

step 2: subtract 2 from both sides.

2x+2−2=12−2

2x=10

step 3: divide both sides by 2.

2x

2

=

10

2

x=5

step-by-step explanation:

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.