How many even 2-digit numbers have an odd number as the sum of their digits?

Y varies inversely with x. if y = 40 when x = 16, find x when y = -5

True or false 12. The set of good students in our class is a well defined set

What is the difference between the 8th multiple of8 and the 5th multiple of 8

You are fencing a rectangular puppy kennel with 25 ft. of fence. The side of the kennel against your house does not need a fence. This side is 9 ft. long. Find the dimensions of the kennel.

At a certain vineyard it is found that each grape vine produces about 10 lb of grapes in a season when about 500 vines are planted per acre. for each additional vine that is planted, the production of each vine decreases by about 1 percent.

A type of friction that occurs when air pushes against a moving object causing it to negatively accelerate

A basket of beads contains eight red beads six yellow beads and six green beads. A bead will be drawn from the basket and replaced 150 times. What is a reasonable prediction for the number of times a green bead is drawn?

How many different 10-letter code words can be constructed from the English alphabet?

The circumference of a circle with a radius of 2 meters is approximate by the perimeter of an inscribed polygon with 10 sides. Which expression gives the described approximation of the circumference?

2x^2-16+22=0 (quadratics)