: I uploaded the answer to a file hosting. Here's link:
bit.
9514 1404 393
Answer:
A:
Step-by-step explanation:
Side length ratios in a 30°-60°-90° "special" triangle are (shortest to longest):
1 : √3 : 2
Comparing to the given side lengths, we have ...
1 : √3 : 2 = x : 20 : y
Making these ratios the same gives ...
x = 20/√3 = (20√3)/3
y = 2x = (40√3)/3
These values match choice A.
Answer:
(4,5)
Step-by-step explanation:
Rotating a <em>point </em>by 90 degrees <em>counterclockwise</em> would make the y become x and switch it's negative/positive value, and make x the y.
Ex: (x,y) would become (-y,x)
Answer:
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.