Why do fractions need a common denominator when you add or subtract them?

A local school took 340 student on a field trip the zoo. All 7 buses were filled and 4 students had to travel in cars. How many students were on each bus?

Evaluate 6j 23 kl-3, when j=3, k=7, and l=33.

What is 10 * 30 and why but how do i put a times sign instead os shift eight?

The baseball team wanted to rent a small bus for the travel to a tournament Superior bus charges $2.95 per mile driven custom transport charges $300 plus $2 per mile for each company show how many rental cost C depends on number of miles driven m.

Factor 10x3 + 8x2 - 6x.

What number is 24% of 80? What number is 120% of 70? 20% of 150 is what number? 0.8% of 150 is what number? 120% of what number is 102?

Using the two functions listed below, insert numbers in place of the letters a, b, c, and d so that f (x) and g (x) are inverses. f (x) = x+a/b g (x) = cx-d

In Martin's class of 20 students, 4 students report that social studies is their favorite class and 75% of the students report that PE is their favorite class.

Mrs. Durham purchases turkey from the deli counter for $3.25 per pound. She also purchases a loaf of bread from the bakery for$4.50. What equation can be used to represent the total cost, c, of Mrs. Durham's purchase of bread and t pounds of turkey?

Factor the polynomial: - 24a^2b^3c^4-36a^4b^3c^2