A triangle with vertices at A(20, -30), B(10, -15), and C(5,-20) has been dilated with a center of dilation at the origir The image of B, point B', has the coordinates (2, -3). What is the scale factor of the dilatation

it would be 6xy and -16xy.

answer is because 4×10=40

and 98×4= is 392

40,392

it has to have an angle of 90 degrees

step-by-step explanation:

this can be solved first with pythagorean theorem, which tells us to square both legs of the triangle and sum it. this will be equal to the square of the hypotenuse.

the hypotenuse is the side "opposite" the 90 degree angle, which is x.

so we can write using pythagorean theorem,

simplifying:

to further simplify this radical, we need to use the property  

thus