Which statement about sqrt x-3 - sqrt x = 3 is true? x = –4 is an extraneous solution. x = –4 is a true solution. x = 4 is an extraneous solution. x = 4 is a true solution.

One side of a rectangle is 7 feet shorter than seven times the other side. find the length of the shorter side if we also know that the perimeter of the rectangle is 306 feet.

Human body temperatures have a mean of 98.20° f and a standard deviation of 0.62°. sally's temperature can be described by z = 1.4. what is her temperature? round your answer to the nearest hundredth. 99.07°f 97.33°f 99.60°f 100.45°f

Which geometric principle is used to justify the construction below?