Describe in words the region of double-struck r3 represented by the equations or inequalities. x2 + z2 ≤ 9 here x2 + z2 ≤ 9 or equivalently x2 + z2 ≤ 3 which describes the set of all points in double-struck r3 whose distance from the -axis is at most 3 . thus, the inequality represents the region consisting of all points on or inside a of radius with axis the -axis.

60: 45 =12: 9 =4: 3 so the answer is 4: 3

h * s * a

h = history teacher

s = science teacher

a =   art teacher.

i see no data table, but just multiply the number of history teachers, science teachers, and art teachers.

proportions are fractions that equal to each other. so if two fractions are the same, they are proportional.

let's check the answers to see if they are proportional.

question a is not proportional because you can't turn 1.5/3 to 3/9. if you try to multiply 1.5/3 by 2 or 3, you wont get 3/9. it's impossible to make the fractions the same.

question b is not proportional because you can't turn 22/33 to 4/6. 33 can't go into 6.

question c is proportional because when you multiply 2 and 3 by 71, you would get 142/213, and those fractions equal to each other

question d is proportional because when you divide 14 and 7 by 2, you would end up with 7/3.5, and those fractions equal to each other.