I don't understand Left and Right riemann sums. If you could help Please estimate the value of the definite integral using a LEFT Riemann Sum with 3 EQUAL SUBINTERVALS. Integral with 4 on top and 1 underneath (x^2+3)dx

Which of the following is a disadvantage of using solar energy? a. it requires good sun exposure. b. it is abundantly available. c. it is a renewable resource. d. it reduces greenhouse gas emissions.

*i will mark you brainliest plus 10 free points * which of the following is not a basic defensive driving skill? a. a solid grasp on the instruments and controls at your disposal. b. the pre-drive procedures and adjustments to your ride. c. scanning for hazards and adequate space management. d. the post-drive procedures and adjustments during your ride. e. all of the above

You must all emergency vehicles using a siren or flashing lights. a. honk to make your position known to b. follow c. yield the right-of-way to d. drive around