Determine the value of A such that the system of equations below would have an infinite number of solutions?
18x + 12y= 36
ax - 8y = -24
a =

In the pendulum formula t=2pi. read the problem on the picture ! ; $; $; ! ; ! ; ! ; )$; ! ; ! ; ! ; $; $; $! ; ! ; ); $; $$

If abcde is reflected over the x-axis and then translated 3 units left, what are the new coordinates d?

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min