Question

please tell this answer correctly of question 8th

Answer 1

Answer:

Read properties of summation/sigma

Step-by-step explanation:

Refer RD sharma

Answer 2

86=480/27+P
86(27+P)= 480
2322+86 P=480
86P = 480-2322
P= -1842/86
P= -21.41
Ans=-21.41