What is a letter or symbol that represents some unknown value

What is the sequence of. 1+3+5+7 + ... 1209

The measure of angle A is 30 and the measure of angle B is 124. What is the measure of angle C in degrees?

The monthly mortgage payment on your house is $821.69. it is a 30 year mortgage at 6.5% compounded monthly. how much did you borrow? 1. $ 85,000 2. $100,000 3. $115,000 4. $130,000 5. $140,000

What is 0.5x + 2.2y=9 6x+0.4y = - 22 What's the answer and how do I complete the problem? Hat does x and y equal?

Simplify this expression. If it is already simplified, then write it as it is. 2p - 2 - 9 - 9p

Determine the effect on the balance sheet after the following transaction. Place an x by decreases or increases and then fill in the amounts. You sell a product purchased for $750 for $1,500.

Seth has twice the number of games that Matt has. Seth has 80 how many games does Matt have?

Add. Show partial sums. Look for the pattern write last addition problem in the pattern 1) 318+235 320+335 322+435

Between x = 2 and x = 3, which function has a greater average rate of change than y = 13-x? A) y = 2xB) y = 5x-2C) y = 14-xD) y = 23-x

Jason made Christmas cookies in the shape of stars and snowman. She made 12 star cookies and 8 snowman cookies. What percent of the cookies were shaped like a star?