WHICH equation is part of solving the system by substitution?
[ x+y= 11
(4x² – 3y² = 8
O 4(y + 11)2 – 3y2 = 8
O 4(11 – y)2 – 3y2 = 8
O4(y – 11)2 – 3y2 = 8
O 4(-11y)2 – 3y2 = 8

Alex drew a circle with right triangle prq inscribed in it, as shown below: the figure shows a circle with points p, q, and r on it forming an inscribed triangle. side pq is a chord through the center and angle r is a right angle. arc qr measures 80 degrees.

Amountain climber starts a climb at an elevation of 453 feet above sea level at his first rest stop he has climbed 162 feet and by his second rest stop he has climbed another 207 feet its getting late in the day so the climber starts his way down if the climber desends 285 feet how much does he need to ascend or descend to return to the original starting point

How many possible outcomes are there when sharya spins the spinner shown below twice?