Arectangle has a perimeter of 84cm and a length of 35cm. what is the width.

Ricardo ran the 400 meter race 3 times his fastest time was 54.3 seconds his slowest time was 56.1 seconds if his average time was 55.0 seconds what was his time for the third race

Find dy/dx using implicit differentiation ln(20+e^xy)=y

Identify the graph of y = ln x + 1.