Answer:
x= 145
Step-by-step explanation:
this equals to 180
so 180- 35=
Summation of 3n + 2 from n = 1 to n = 14 = (3(1) + 2) + (3(2) + 2) + (3(3) + 2) + . . . + (3(14) + 2) = 5 + 8 + 11 + ... + 44 ia an arithmetic progression with first term (a) = 5, common difference (d) = 3 and last term (l) = 44 and n = 14
Sn = n/2(a + l) = 14/2(5 + 44) = 7(49) = 343
Therefore, the required summation is 343.
Answer:C
Step-by-step explanation:
Answer:
481
Step-by-step explanation:
Answer:
545454 minutes
Step-by-step explanation:
454545 / (444 x 555) ... min take for 1 people to paint 1 wall
min take for 666 people to paint 444 wall
666 x 444 x (454545 / (444 x 555)) = 666 x 454545 / 555 = 545454 minutes
