Find the area under the standard normal curve to the right of z = 2

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

Last month, leonhard euler's watch kiosk at the mall had total sales of $9,489. merchandise totaling $225 was returned. the goods that were sold cost leonhard euler's $5,481. operating expenses for the moth were $992. what was the gross profit on sales?