elect all of the options which are true of the perpendicular bisector of line AB

Nel fascio di rette generato dalle rette di equazioni \( x-y=0,2 x \) a. le rette parallele agli assi cartesiani; b. la retta passante per l'origine; c. la retta parallela alla retta di equazione \( x-3 y+1=0 \); d. la retta perpendicolare alla retta di equazione \( x-3 y+1=0 \). [a. \( x=1 \), y

Choose the correct alternative. The length and breadth of a rectangle increases by \( 10 \% \) and \( 25 \% \) respectively. What will be the percentage increase in its perimeter?

Nel fascio di rette generato dalle rette di equazioni \( x-y=0,2 x-3 y+1=0 \) determina: a. le rette parallele agli assi cartesiani; b. la retta passante per l'origine; \( \begin{array}{l}\text { c. la retta parallela alla retta di equazione } x-3 y+1=0 ; \\ \text { d. la retta perpendicolare alla retta di equazione } x-3 y+1=0 \\ \text { la. } x=1, y=1 \text {; b. } x-y=0 ; \text { c. } x-3 y\end{array} \)

2. A company has been asked to design a building for an athletic event. The building is in the shape of a square pyramid. The pyramid has a height of 481 feet, and the length of each side of the base is 756 feet. What is the approximate volume of the pyramid? \( 1.21 \times 10^{5} \mathrm{ft}^{3} \) \( 4.85 \times 10^{5} \mathrm{ft}^{3} \) \( 9.16 \times 10^{7} \mathrm{ft}^{3} \) \( 2.75 \times 10^{8} \mathrm{ft}^{3} \)

A right triangle has one angle that measures 45 degrees. What is the measure of the third angle?