What is the image of (8, 2) after R-90°?*

(-2, 8)

Step-by-step explanation:

When rotating an image 90 degrees, x and y switch places and te new x coordinate becomes the opposite sign.

(x,y) -> (-y, x)

so

(8,2) -> (-2,8)

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.

94

step-by-step explanation:

average the numbers and use a variable to figure out the minimum to get a 90.

(79+94+91+92+x)/5=90

x = 94