X : 28 = 7 : x calculate the positive value of x.

What is the sum of 3 and a number

Jeremy loses his former interest in doing arithmetic after his teacher promises him $1 for each problem he solves correctly. Which theory best explains Jeremy's loss of interest in arithmetic?

Michael's little brother plays with the building blocks what are in the shape of a cube in a cube has an edge length of 15 mm what is the surface area of this Cube 15 mm2 90 mm2 1350 mm2 3375 mm2

A box has dimensions l, w, and h. how is the volume changed if the length and width are each multiplied by 5 and the height remains the same?

How old would i be in 1991 if i was born in 1987?

In order to solve x 2 + 12 x = 2 by completing the square, what value must be added to both sides?

A guy has 24 inches of yarn. How many feet of yarn does he have

The line parallel to the x axis and 6 units below it

A clock has a face with a radius of 11.5 centimeters. What is the approximate circumference of the clock? A. 72.22 cm B. 36.11 cm C. 3.66 cm D. 18.06 cm

In 9 hours, Jane reads 63 chapters of a book. whats is her rate in chapters per hour?