Someone me! 100 points. im begging you

Area of a triangle is 1/2 base * height * the scale factor squared

A = 1/2b*h*sf^2

A = 1/2  * 4 * 3.5*5^2

Choice D

Enlarged by scale of 5 means multiplies by 5:

4 x 5 and 3.5 x 5

So Area:

= 1/2 ( 4 x 5)( 3.5 x 5)

= 1/2 (4 x 3.5) x 5^2

so answer is the last one

She should have multiplied 1/2(4)(3.5) by 5^2

goog may have it for you

(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