Cecil takes subway and work with 13 people, not counting himself. what is a estimate of the number of people in his office ride subway with him?

Both the red and blue line segments stretch from the center of the circle to a point on the circle. the length of the blue segment is 5. how long is the red line segment?

Prove that quadrilateral is a rhombus.

Write the equation in logarithmic form e^x=403.429