Which of the following best describes a lens galaxy? O A group of stars that serve as a quick reference to different parts of the sky

O Several billion stars arranged in a disc shape that has uneven edges

O Millions of planets arranged in the shape of a disk with spiraling arms

O Billions of stars arranged in a circular pattern with a flattened core

What is x and y intercepts for y=x+7

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?

You have 17 cats that live in houses on your street, 24 dogs, 3 fish, and 4 hamsters. what percent of animals on your block are dogs?