Sam chose a number. He then multiplied his number by 2 and added 7. His result was 23. What was his original number?

Simplify 18 - 2[x + (x - 5) ]. 13 - x 13 - 4x 8 - 4x 28 - 4x

What is the sum of 6 feet 10 inches and 8 feet 9 inches? A. 14 ft. 7 in. B. 15 ft. 7 in. C. 13 ft. 19 in. D. 15 ft. 19 in

How do you write 81,271 in words

Which expression has a value of 15 when

A tourist in France wants to visit 8 different cities. If the route is randomly selected, what is the probability that she will visit the cities in alphabetical order?

The number of vibrations in a piano string are inversely proportional to its length. A wire 1.25m long vibrates at 510 vibrations/second. To produce 450 vibrations per second, how long should a wire be made

If the radius of a circle is 6in., what is the diameter and circumference of the circle

The ratio of fishing boats to sailboats in a bay is 8:3. There are a total of 24 sailboats in the bay. How many fishing boats are in the bay?

4,140 inches is how many yards

Jane is 3 years older than mary, and mary is twice as old as kay. if kay is x years old, how old is jane?