Find the sum of the summation of 3 i minus 15, from i equals 2 to 7. options: 9 0 −9 6

Answer with explanation:

where a, is first term and l is last term.

Option C= -9

(sin 42)/31. = sinx)/37

sinx = 37 (sin42)/31

= 37× 0.66/31 = 0.787

x= 51.9

other angle opposite to y = 180-51.9-42

= 180- 93.9 =86.1

so

sin42)/31 = sin 86.1)/y

0.021 = 0.997 /y

y= 0.997/0.021 =47.47

the least value out of the data shown is 5, maybe if you post a picture with it i could a little more.

step-by-step explanation: