yoo5453 yoo5453

09-07-2019
Mathematics

contestada

Find the sum.
5 + 6 + 7 + ... + 11

Respuesta :

salatulmaghrib salatulmaghrib

09-07-2019

5+6+7+8+9+10+11=56
and that's the answer
There's also a formula (5+11)/2*7=56 (you take the average of the first and last terms and multiply that by the number of terms)

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