The variable z is directly proportional to x, and inversely proportional to y. when x is 3 and y is 6, z has the value 9.5. what is value of z when x =8, & y= 12

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.

X+ y = 5 ; x - y =3 solve using linear combination

Apatient is to be given 35 milligrams of demerol every 4 hours. you have demerol 50 milligrams/milliliter in stock. how many milliliters should be given per dose?