Who is responsible for the decimal system we use today?

A painter leans a 20-ft ladder against a building. The base of the ladder is 12 ft from the building. To the nearest foot, how high on the building does the ladder reach?

Jack is installing a 100-foot shortwave radio antenna. He has cemented the base in concrete and has cemented an anchor hook 10 feet from the base. How long will the guy wire be from the hook to the top of the antenna?

If T (n) = 2n-7, what is the 5th term?

Directions: State whether the number is a solution to the given inequality. 1. k < 2; 4/3 2. a > 15; 15 3. w < - 1.6; 1.7 4. r > - 9/5; - 3/2

85 out of 350 books in the library are about Mysteries. What percent of the books are Mystery books?

Juanita has a net spendable income of $1,850 per month. What is the maximum amount of money that she should budget for transportation? Round to the nearest dollar. A. $370 B. $385 C. $228 D. $378

The book fair has 390 books. They have 5 more boxes with 10 books in each box. Count by tens how many books are at the book fair

What are all the expressions that are equivalent to 64?

For a wedding the bride must select 4 bridesmaids from her 6 closest friends and must arrange them in order for the ceremony. How many arrangements of 4 bridesmaids from her 6 closest friends? A. 24 B. 360 C. 750 D. 1296

A is 5 years older than T. In 3 years, T will be 2/3 A age. How old is A?