Turn 8 21/40 into a decimal

Who was qin shihuangdi, and why was he important?

Find the difference: 27.85 - 0.1

Geometry can be defined as

How does 5/2 turn into an normal fraction

un numero supera en 43 a otro. Si el mayor se divide entre el menor, el cociente es 5 y el residuo es 7. Encontrar los numeros.

The sequence below is arithmetic {1,8,27,64}

Angles α and b are the two acute angles in a right triangle. Use the relationship between sine and cosine to find the value of b if b < α. sin (x 2 + 2x) = cos (2x + 3x 2)

Kevin has mowed 40% of the lawn. If he has been mowing for 20 minutes, how long will it take him to mow in a hour?

How to solve - x^2-2x=5?

Part A: Create a system of linear equations with no solution. In two or more complete sentences, explain the specific characteristics that you included in each equation to ensure that the system would not have a solution.