The radius, r, of a circle is one-half of the length of its diameter, d.
how do i write this in paper?

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?

Thee blue triangle has rotated from quadrant i to quadrant iii about the origin. describe the effects of the rotation on the coordinates of the blue triangle.