7. using k as the constant of proportionality, write an equation that expresses: z varies jointly as x and y. if z = 24 when x = 3 and y = 4, find z when x = 5 and y = 6. (show steps)

60

Step-by-step explanation:

"z varies jointly as x and y" can be expressed algebraically as z = kxy, where k is the constant of proportionality.

Given:  z = 24 when x = 3 and y = 4, then 24 = k(3)(4), or 24 = 12k.

The const. of prop. must then be k = 2.

So now we have the specific relationship z = 2xy.

If x = 5 and y = 6, then z = 2(5)(6) = 60.

choice b is correct

step-by-step explanation:

we have been given the following system of inequalities;

we are required to graph the solution to the system of inequalities. using a graphing tool, the graph of the system is as shown in the attachment. the continuous line represents the graph of while the dotted line represents .

answer: your gay

step-by-step explanation:

you dont know math