Can someone help me?

-16t^2 + 106 = 47

t = √59/4

Step-by-step explanation:

106 - 59 = 47

-16t^2 + 106 = 47

-16t^2 + 106 - 106 = 47 - 106

-16t^2 = -59

-16t^2 / -16 = -59 / -16

t^2 = 59/ 16

√t^2 = √59/16

t= -√59/4 and √59/4

but you cant have negative time, so √59/4

the forst and 3rd

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