The slope of ab is 2/5 . a(3, k) is a point on the line ab. find k if b(-7, 0).

slope of any line with 2 points is,

m=(y2-y1)/(x2-x1)

In this case,

m=2/5

(x1,y1)=(3,k)

(x2,y2)=(-7,0)

So,

》2/5=(0-k)/(-7-3)

》2/5=-k/-10

》k=20/5

》k=4

1,918

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