Which transformation will always map a parallelogram onto itself?

a 90° rotation about its center

a reflection across one of its diagonals

a 180° rotation about its center

a reflection across a line joining the midpoints of opposite sides

An alien has just landed from the planet, iksnimak. he would like to leam how to add two fractions when thedenominators are the same. write a paragraph that explains to our alien friend, in your own words, the detailsabout how to add the fractions, how to change the result to a mixed number, and how to reduce the fractionpart. use this problem as your example: the two fractions are 5/8 & 7/8

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

What is the quadric regression equation that fits these data