Point B has coordinate B(1, -1).

What is the coordinate of B' under a scale factor of 3?

(1,-1)

(3, 3)

(-2,2)

4-6, 6)

B' is  (3, -3)

Step-by-step explanation:

When we have a point with coordinate (x, y) and we do a dilation (around the center) with a scale factor of A, the coordinate of the new point will be:

A*(x,y) =(A*x, A*y)

Here our point is (1, -1) and the factor is 3, so the new point will be:

(3*1, 3*-1) = (3, -3)

add an image

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