If the circumference of a circle is 50piecm squared what is the diameter

Which of these choices show a pair of equivalent expressions?

In two or more complete sentences, formulate how to use technology to calculate the appropriate regression model for the given data. you are not required to find the model, just choose the appropriate regression and explain how to use the technology. (-5,,2.,0.8), (0,-0.5), (2,-1.3), (3,-0.8), (5,2)

What happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?