Using the polynomials q = 3x 2 + 5x - 2, r = 2 - x 2, and s = 2x + 5, perform the indicated operation.

q - [r + s]
2x2 + 3x - 9
4x2 - 3x + 9
2x2 - 3x + 9
4x2 + 3x - 9

(D) 4x² +3x -9

Step-by-step explanation:

Q -[R+S] =(3x²+5x - 2) -[(2 - x²)+(2x+5)] = (3x²+5x - 2) -[2 - x²+2x+5] =

(3x²+5x - 2) -[ - x²+2x+7] = 3x²+5x - 2+x² - 2x - 7 = 4x² +3x -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

according to egenuity the answer is

step-by-step explanation:

d. 344.22