24-08-2020
Mathematics

contestada

find the sum: 9²+ 10²+11²+.........20².

Respuesta :

unicorn3125 unicorn3125

24-08-2020

Answer:

2666

Step-by-step explanation:

9² + 10² + 11² + ......... 20² =

= 9² + 10² + 11² + 12² + 13² + 14² + 15² + 16² + 17² + 18² + 19² + 20² =

= 81 +100 +121 +144 +169 +196 +225 +256 +289 +324 +361 +400 =

= 2666

Answer Link

Otras preguntas

rae yang and fan cau both wrote daibao. yang renounced her teacher and fan denounced her parents. explain one way that their action were similar and one way tha

how and why we are similar to our parents

WILL GIVE 60 POINTS AND BRIANLEST FOR THE CORRECT ANSWER!!! Please help! The residual plot for a data set is shown. Based on the residual plot, which statement

PLEASE HELP what is 6 + 2 minus 3 times 12 divided by 34 plus six minus 2 plus 20 times 4 divided by 20 x 300 - 80 + 39 times 20 equals

It appears that people who are mildly obese are less active than leaner people. One study looked at the average number of minutes per day that people spend stan

A square pyramid is sliced para well to the base as shown what is the area of the resulting two dimensional cross-section

what are the coefficient(s) in the following expression?5a + 6b - 7c

The graph of y=4x has been shifted up 3 units.what is it’s new equation

In a(n) ________ either one condition or some other condition must be met in order for an event to take place. a. nested decision b. AND decision c. OR de

A train is approaching you at very high speed as you stand next to the tracks. Just as an observer on the train passes you, you both begin to play the same reco