find the value of k for which the system of equations has a unique solution 2x+ky-9=0 , kx+3y-13=0. ​

How many zeros does the function f(x)=4x3-x2+1 have

You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.

Which of the following is true for the relation f(x)=2x^2+1