What is the estimated sum? round each number addend to the nearest thousand before adding. 75,364 + 472,756 a. 550,00o b. 548,000 c. 545,000 d.540,000 mehhh

Suppose you want just guess at the answers in a 5 question multiple-choice test. each question has 3 responses and only one is correct. what is the probability of getting two questions right just guessing? 20 points 0.3275 0.2753 0.7532 none of the above

He mass of a single atom of carbon can be found by dividing the atomic mass (12.01 g) by 6.022 x 10^23. which is the mass of a single carbon atom, correctly written in scientific notation with the correct number of significant figures?

In order to be invited to tutoring or extension activities a students performance 20 point higher or lower than average for the