Which word best describes a parallelogram with diagonals that are congruent and perpendicular?

A. rectangle

B. rhombus

c. square

D. trapezoid

Rick's office recycled a total of 60 kilograms of paper over 15 weeks. How many weeks will it take Rick's office to recycle a total of 72 kilograms of paper? Solve using unit rates.

The green holiday lights blink every 8 seconds and the red holiday lights blink every 6 seconds. How many times will the lights blink at the same time in one minute?

What is 1.87268 in expanded form

The number nine added to the product of 10 and - 4 is what number

What are people testing when they scratch a diamond against glass?

Explain how the associative property can be used to solve this problem. 4/5 Divided By 3/7 X 5/16

A square piece of gold has sides that are 5 millimeters long. What is the piece of gold's area?

D2-9k+3 for d=10 and k=9

A fraction reduces to 36. If its denominator is 6x5, what is its numerator?

Does anyone take the Aleks Algebra 1 online class?