Why can you multiply the numerator and the denominator of a fraction by the same number to find a equivalent fraction?

if a book is 33 hour and 45 min long, how many days would it take you to read it if you read 6 hours a day?

Jim answered 7 emails. This is 35% of the emails he must answer. How many emails does he need to answer

For today only I am authorizing you to offer a free insurance plan for one year to customers who sign up for our regularly costs 6.99 a month. that will save the customer almost how much a year

The steps for adding integers are the same as for subtracting them. True or False?

K=mv^2/2 Find derivative of k

Is 9/12. Bigger than 3/4?

What is 7 2/5 - 5 2/3

Myron has about 179 postcards he says he has about 200 cards did he round to the nearest 10 or nearest hundred explain

A food processor packages orange juice in small jars. The weights of the filled jars are approximately normally distributed with a mean of 10.5 ounces and a standard deviation of 0.3 ounce.

If f (x) = 7x-5, find f-| (16) ?