The radius, r, of a circle is one-half of the length of its diameter, d. d
2
1d
2
1
+ r=d
2
2 r=d
1
d
NI

Write the slope-intercept form of the line that passes through the point (1, 0) and is parallel to x - y = 7. t

Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).