jennileebeukes9 jennileebeukes9

03-08-2021
Mathematics

contestada

Given that S=n/2(2a+(n-1)d). If a=4,d=3 and n=20 find the value of S

Respuesta :

bayan00 bayan00

03-08-2021

Answer:

s=650

Step-by-step explanation:

s=n/2(2a+(n-1)d)

s=20/2[2x4+(20-1)3]

s=20/2(2x4+19x3)

s=20/2(8+57)

s=20/2x65

s=10x65

s=650

Answer Link

aayu0302 aayu0302

03-08-2021

Answer:

s=650

Step-by-step explanation:

Sum of 'n' terms formula is given by:-

s=n/2(2a+(n-1)d)

s=20/2[2x4+(20-1)3]

s=20/2(2x4+19x3)

s=20/2(8+57)

s=20/2x65

s=10x65

s=650

Answer Link

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