If you wanted to make a scaled copy with side lengths twice the size of the original, where should you place E? Explain how you know. Please explain I don’t understand this.

The measure of an angle is 117°. what is the measure of a supplementary angle?

Amountain climber starts a climb at an elevation of 453 feet above sea level at his first rest stop he has climbed 162 feet and by his second rest stop he has climbed another 207 feet its getting late in the day so the climber starts his way down if the climber desends 285 feet how much does he need to ascend or descend to return to the original starting point

Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?