A student surveys households asking whether there are children in the household and whether there are pets in the household. The student discovers that the ratio of the number of households with children to those with no children is 3:4. Complete the two-way table with the results of the survey. Pets No Pets
Children 16
No Children 24 12

b.-4 units

all you   do is count how many times you move

the answer for this question is : 360°

step-by-step explanation:

we have been given a triangle   we need to tell which one of these is a triangle below to map onto itself.

360° rotation is the complete rotation which eventually leads to the same figure which is given.

the correct will be, that is 360° that will cause the triangle below to map onto itself.

m∠a is 90°

m∠b is 40°