mNiqMMavannnner mNiqMMavannnner

12-02-2016
Mathematics

contestada

The first square number is 1, and the sum of the first 20 square numbers is 2870. Work out the sum of the first 21 square numbers.

Respuesta :

MichaelLiu MichaelLiu

12-02-2016

The 21st square number is 21^2 = 441
2870 + 441 = 3311

Answer Link

Otras preguntas

A statement we accept without proof is called a theorem definition postulate term im thinking its theorem.. sound correct to anyone else?

What is the connection between religion and art? A. Early civilizations recognized the power of art to touch human emotions. B. Shamans and priests were the fir

Factor completely: 3x2 + 2x - 1 Answer (3x + 1)(x + 1) (3x + 1)(x - 1) (3x - 1)(x + 1) (3x - 1)(x - 1)

Refer to the following conditional statement: If a and b are odd integers, then a • b is an odd integer. Which shows the hypothesis? A. a and b are not odd inte

Matter is defined as anything that has _____ and volume. atoms molecules mass energy

What passes through the points (-4,3) and (-4,-2)

How many valence electrons does chlorine (Cl) have? View the periodic table. A. 4 B. 6 C. 7

The sum of 13 and twice a number h

You drive your car for 3hour at an average speed of 130 km per hour. How far did you go?

Which word corrects the capitalization error in the sentence? My cousin Maureen makes the best irish soda bread. A. Soda B. Irish C. Cousin