binfor213 binfor213

15-08-2017
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 :

cubstellationoupyb6 cubstellationoupyb6

15-08-2017

21²=21×21
21×21=441

2,870+441=3,221

Answer Link

Otras preguntas

If the density of nitrogen gas at a certain pressure and temperature is 1.20 g/L, how many moles of nitrogen gas are in 15.0 L.

The cruise ship Oasis of the Seas has a gross weight of approximately 220,000,000 pounds. Although pure water has a density of 62.4 pounds per cubic foot, ocea

order the decimals from least to greatest 0.0453 0.47530.4792, 0.1082, 0.3047

An electronic games manufacturer producing a new product estimates the annual sales to be 7000 units. Each year 1% of the units that have been sold will become

PLS HELP ME THE PROBLEM IS ATTACHED BELOW

find the distance between (-9,-5) and (4,-3)

how did the christian outlook on life differ from the roman outlook

Which branch of the government is usually the most responsible to the will of the people

If you’re good at Spanish could you please help me with this

F(x)=e^(4x)+e^(4x) need the answer