What is the value of x in the equation 3x-4y=65, when y-4? x=13 1/4
x=21 2/3
X =23
x=27

x = 27

Step-by-step explanation:

3x -4y = 65

3x -4(4) = 65

3x - 16 = 65

     +16  +16

16s cross out and 65 + 16 =81

3x = 81

3x/3 = 81/3

3s cross out

x = 27

because they could drop even lower..

(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