Prove that the equation 12x2+70x+a2+1=0 for any value of a does not have any positive roots.

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?

Someone answer asap for ! michele pushes a box d meters across a floor. she uses a force f, in newtons, to push the box. she pushes the box for t seconds. the formula p = fd/t calculates the power, p, in watts, that it takes for michele to complete the task. solve the formula for d.

In the diagram of circle o, what is the measure of zabc?