Sign the following values a=5 b=10 c=15 Directions: erform the indicated operation
1. (a + b) – 5 (c + a)
2. (b xc) 10 (a x 2)
3. (a - b) + (b + a)
4. (2ab - 45) + a
5. (2bc - 5ab) ÷ab​

What is the value of x when x + 7 = 21?

The triangles in the diagram are congruent. if mzf = 40°, mza = 80°, and mzg = 60°, what is mzb?

Suppose you are an avid reader and are looking to save money on the cost of books instead of paying about $20 for each book, you decide to look into purchasing a kindle for $120 you can purchase e-books for about $5 each 1. find the slope-intercept equation for the cost of the hard copy of books using x to represent the number of books 2. find the slope-intercept equation for the cost of the kindle with cost of e-books using x to represent the number of books