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atoms and elements: mastery test
select the correct answer.
the atomic number of krypton (kr) is 36, and its mass number is 84. how many neutrons does it have?
o a. 18
ob. 36
oc. 48
oo

The sum of 5consecutive even numbers is 100. what is the first number in this sequence?

The computer that controls a bank's automatic teller machine crashes a mean of 0.6 times per day. what is the probability that, in any seven-day week, the computer will crash less than 5 times? round your answer to four decimal places

Plzz ! if you were constructing a triangular frame, and you had wood in the length of 4 inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no? = explain your mathematical thinking/show your work: