A group of workers can plant 8 1/4 acres in 5 1/2 days. What is the unit rate in acres per day?

Write your answer as a fraction or a mixed number in simplest form.

(a) calculate the molarity of a solution that contains 0.0345 mol nh4cl in 400 ml of solution. (b) how many moles of hno3 are present in 35.0 ml of a 2.20 m solution of nitric acid? (c) how many milliliters of 1.50 m koh solution are needed to supply 0.125 mil of koh ?

Select the best attribute for the angle pair formed by two parallel lines intersected by a transversal.

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8