I need help answering question 1 and question 2

Step-by-step explanation:

1. y= 1-x² is quadratic because has the variable x to the second power

y = -x² +1 has quadratic term -x², and constant term is 1

2. y= 3x-5 +4x²

a. quadratic term is 4x² because has the variable x to the second power

b. linear term is 3x because has the variable x to the power of one

c. constant term is -5 because the variable x to the power 0 so there is no x

(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

a

step-by-step explanation: