A triangular courtyard has a perimeter of 120 meters. The lengths of two sides are 30 meters and 50 meters. How long is the third side?

40 meters long

Step-by-step explanation:

Okie dokie, so because we already have 2 of the three sides, and we know the total perimeter, we just have to subtract the 2 known sides from the perimeter to find the missing side.

The equation should look like this:

120 = 30 + 50 + s

First we need to combine the like terms:

120 = 80 + s

Now, in order to ind the missing side, we need to subtract 80 from both sides:

S = 40

So the missing side is 40 meter long.

Hope this helps :)

what are the things "represented below"?

step-by-step explanation:

nobody can if you dont give the choices

(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