A quantity x varies directly with y and inversely with z. Which expression represents the constant of variation, k?

12 + 3y - 8 - 7y = ?

John ran the 100-m dash with a time of 9.93 sec. If this pace could be maintained for an entire 26-mile marathon, what would his time be?,

Determine the absolute value of the following expression 2 (3-8) + 8

Dana knits 11 centimeters of scarf each night. How many nights will Dana have to spend knitting in order to knit a total of 22 centimeters of scarf?

Imani sells shirts packed in boxes that are each 15in. x 10in. x 2in. Imani stacked 3 boxes and wrapped them with one piece of paper. How much paper did she use, not including overlap?

What is the equation of slope=-8/5, y intercept = 4

Select the correct answer. Anna learns in her science class that the human eye blinks an average of 4,200,000 times a year. What is this number expressed in scientific notation? A. 4.2E6 B. 4.2E-6 C. 42E6 D. 4.2E5 E. 4.2E-5

Kip is going to meet his family. Predict the number of kilometers that will remain after 7 hours. The table shows the number of kilometers he needs to travel until he reaches them. Enter the correct answer.

What is the main reason the US civil war was started

How do you show 2+3i is a root of x^2-4x+13