lin scored 21 marks in a test and jon scored 15 marks. Calculate lin's marks as a percentage of jon's mark.

A plane intersects a prism to form a cross section that is a polygon with five sides. The minimum number of sides that the polygon at the base of the prism must have is ... ?

The inverse variation equation shows the relationship between wavelength in meters, x, and frequency, y.

A calculator has 50 keys in five colors: gray, black, blue, yellow and green. There are seven gray keys for every 11 black keys also the number of black keys is two less than twice the number of gray keys how many gray keys and how many black keys

Matthew and his brother brought 500 game cards. They decided they were going to spilt the cards up between the two of them. How many cards do they each have?

The diameter of the container is 13 centimeters and its height is 24 centimeters. Determine, in terms of I, the volume of the ovlinder, in cubie centimeters,

A stray dog ate 13 of your muffins. that was 3/10 of all of them. with how many did you start with

The length of a rectangle is 10 more than four times the width. The perimeter of the rectangle is 170 inches. Find the length and width.

Mofor's school is selling tickets to the annual talent show. On the first day of ticket sales the school sold 4 senior citizen tickets and 6 student tickets for a total of $96.

2 units left and 3 units down

Eight sided dice can be described as two square based pyramids stuck together at the bases. Their faces are equilateral triangles.