Got stuck on finding property “a” in said polynomial

Hence, in the simplification of the value of a  = 9.

Step-by-step explanation:

Here, the given expression is

Simplify this given expression, we get:

Now, the given expanded form is

Comparing it with given second last step in simplification, we get

Comparing all term on both sides, we get

ay =  9y

and -ay =  -9y

⇒ a = 9 on both sides.

Hence, in the simplification of the polynomial, the value of a  = 9.

5

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