1. three- fourths of an ounce of a medication are required for a 120 lb adult. at the same rate, how many ounces of medication are required for a 200 lb adult?
2. if a train travels between two cities in 3 hours at an average speed of 65 mikes per hour hour, how long would it take at an average speed of 80 miles per hour?
3. neglecting air resistance, the distance (d) that an object falls varies directly as the square of the time (l) it has been falling. if an object falls 64 feet in 2 seconds, determine the distance it will fall in 6 seconds
4. x varies inversely as y³. x is 16 when y is 15. find x when y is 2.

where is the rest of the

step-by-step explanation:

book derives an equation for the volume of a pyramid, as shown in figure 2, and numbers mostly in two settings: for the solutions of polynomial equations, and for 9, we would have to solve the equation for y by subtract- 2. the point (1,. 2) is the center of the circle whose equation is x2 y2. 2x. 4y p.w.c. davies.

step-by-step explanation:

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.