Farmer francine has boths pigs and chickens on her farm. there are 20 feet and 6 heads. how many pigs and chickens are there?

Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2