Consider U = {xlx is a positive integer greater than 1}.
Which is an empty set?
O {X/X U and < x is prime}
O {X/X EU and 2x is prime}
O {x|x EU and can be written as a fraction}
{x{X EU and 2x can be written as a fraction}

1260=3*6*7*10=3^2*2^2*7*5 perfect cude = 3^3*2^

step-by-step explanation:

i think the answer is c sorry if it's wrong

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.

step-by-step explanation:

deez nut