Solve for y
12ytd=-19 y+t

y=t/(12dt+19)

Step-by-step explanation:

This question want us to make y the subject of formula...it involves a step by step process

Back to the question

12ytd=-19y+t

Let's start solving by asking how can we make y the subject of formula from this equation...you have to be a fast thinker

Let's continue with the solution

12ytd=-19y+t

Add 19y to both sides

12ydt+19y=t

Then factorise only from the left side and y is common to the two figures

y(12dt+19)=t

Divide both sides by (12dt+19)

y=t/(12dt+19)

Therefore the final answer is y=t/(12dt+19)

(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

the answer is 13 cm