Se reparten S/. 525 entre 3 personas, de manera que la segunda tenga S/. 40 menos que la primera, y la tercera S/. 45 mas que la primera y la segunda juntas, ¿CUANTO TIENE LA 3ER PERSONA?

Add 1/7 + -1/7 your answer should be reduced to its smallest form and should not be an improper fraction

Determine whether the following statements are true and give an explanation or counterexample. bold a. when using the shell method, the axis of the cylindrical shells is parallel to the axis of revolution. bold b. if a region is revolved about the y-axis, then the shell method must be used. bold c. if a region is revolved about the x-axis, then in principle it is possible to use the disk/washer method and integrate with respect to x or the shell method and integrate with respect to y.

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.