3. ABCD is a rhombus and P, Q, R and S are the midpoints of sides AB, BC, CD and DA respectively

Show that quadrilateral PQRS is a rectangle:​

Solve the system of equations. y= 2x y= x^2 - 15

Which of the following statement about pascal's triangle are true?

Colby and jaquan are growing bacteria in an experiment in a laboratory. colby starts with 50 bacteria in his culture and the number of bacteria doubles every 2 hours. jaquan starts with 80 of a different type of bacteria that doubles every 3 hours. let x equal number of days. colbys experiment follows the model: a.) y=50*2^x b.) y=50*2^8x c.) y=50*2^12x jaquans experiment follows the model: a.)80*2^x b.)80*2^8x c.)80*2^12x