In a certain country, 800 pennies have the value of 100 ducates and 100 pennies have the value of 250 tolars. How many ducates have the same value of 100 tolars? (work out and explain)

Solve the inequality of - 4p < 2/3

Write 17/5 as a mixed number in simplest form?

Erica wants to know how many books on average are in school libraries in her county. She randomly calls 50 school libraries in her county and finds out how many books they have. She adds the number of books together and divides by 50.

Which expression is equal to X^4/3*x^1/3? A. x^4/9 B. x^5/3 C. x^5/3 D. x2/3

Substitution method y=2x+6 which is 2x-y=2

Is 10 pound of greater or 10 kilograms

Corsi et al. (2007) conducted a study of the factors mediating whether injection drug users enter a drug treatment program. In their sample of 491 drug users, 38.1% were single; 27.5% were married or had a partner; and 34.

The sum of 3 consecutive even numbers is 42. The sum can be respresented by n + (n+2) + (n+4) = 42. What does n represent?

Can an irrational number ever be a whole number?

Bart practices his trumpet 1 1/4 hours on Monday. Tuesday, and Friday, he practices for 1 1/2 hours. How many hours did he practice altogether