An artist uses 49.4 centimeters of decorative molding to make a square picture frame . how long is each side of the frame

Find the sum of the first 8 terms of the following sequence. round to the nearest hundredth if necessary.

The weight of an object in a particular scale is 175.2 lbs. the measured weight may vary from the actual weight by at most 0.1 lbs. what is the range of actual weights of the object

X/y + 4y/x divided by x/y - 2y/x explain as in depth as you can how you simplfied the fractions. i don't know where to start on this : /