Combine like terms.

(7+x) (7-x)

How do you represent the value of 5 in 6.75

You create four t-shirt options and send them to your family to vote on their favorite design. Half of the votes were design #1. The remaining votes were split evenly between the other three designs.

Projected time:30 seconds, actual time 27 seconds

Name two irrational numbers without using the radical symbol or a decimal.

The cost to manufacture a hair clip I $0.50 with a markup of 200 percent what is the selling price of this hair clip

Write an equation with the solution x=20?

A sequence has a first term of 2 and a constant ratio of - 3/2 what are the first five terms of the sequence

A three-dice is a six sided dice with only the numbers 1, 2 and 3. The usual numbers 4, 5 and 6 are replaced by 1, 2 and 3 respectively. 4 three-dice (with sides labeled 1, 2, and 3) are rolled and the numbers face up on the 4 dice are recorded.

Judy is making scarves to give to her family as gifts. She needs to make 5 scarves and each scarf is 3.75 feet long. How many yards of fabric does Judy need to buy?

Find the margin of error for a 95% confidence interval for estimating the population mean when the sample standard deviation equals 100 , with a sample size of (i) 484 and (ii) 1764. What is the effect of the sample size?