CD has coordinate C(-8,-2) and D(-4,-12) determine the coordinate of CD if (x, y) (1/2x 1/2y) and describe the transformation from CD to CD

The diagram shows a 7cm by 6cm rectangle based pyramid. all the diagonal sides - ta, tb, tc and td are length 10cm. m is midpoint of rectangular base. work out height mt to 1 decimal place

Don't know how to find x given these segment lengths

When keisha installed a fence along the 200 foot perimeter of her rectangular back yard, she left an opening for a gate.in the diagram below, she used x to represent the length in feet of the gate? what is the value? a. 10 b. 20 c. 25 d. 30