lcm of 48 64 72 96 and 108(plz send me an picuture and yes plz separetly show all the formulas of each number)

6160

Step-by-step explanation:

If you do not understand my solution, send a picture of how your teacher does it and I will guide you in the same style as your teacher.

you have numbers: 16 28 40 77. I will write each number in each line and show its multiple numbers: Now that if you multiply the numbers I write, you get the same number. For example, 2*2*2*2 = 16 (same for the rest)

16:   2   2   2   2

28:  2   2   7

40:  2   2   2   5

77:  7   11

From the above, we pick 2*2*2*2*5*7*11 = 6160

I got that by picking a number comprised of factors that appear in at least any of the numbers 16 28 40 77

19.side- angle- side

20. angle- side- angle

step-by-step explanation:

(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