The line segment XY with endpoints X(3, 1) and Y(2,-2) is rotated 90° counterclockwise about (-6, 4). What are the endpoints of X'Y'? xd

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The variable z is directly proportional to x, and inversely proportional to y. when x is 4 and y is 13, z has the value 1.2307692307692. what is the value of z when x= 9, and y= 20

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

Find the exact value of each of the following. in each case, show your work and explain the steps you take to find the value. (a) sin 17π/6 (b) tan 13π/4 (c) sec 11π/3