Someone i am on a time limit

use the following information:

u = {x | x is a natural number less than 20}

a = {x | x is an odd natural number less than 16}

b = {x | x is a prime number greater than 5}

(note: the prime numbers less than 20 are 2, 3, 5, 7, 11, 13, 17, and 19.) find the cardinality of each set.

answer
n(b')

What are the equivalent ratios for 24/2= /3= /5.5=108/ = /15

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.

Amira is painting a rectangular banner 2 1/4 yards wide. the banner will have a blue background. amira has enough paint to cover 1 1/2 square yards of the wall. the school colors are blue and yellow, so amira wants to add yellow rectangles on the left and right sides of the blue rectangle. the yellow rectangles will each be 3/4 yards wide and the same height as the blue rectangle. what will be the total area of the two yellow rectangles?