Estimate. Then find the exact sum or difference

6,842
+2,981

Can (3,5 and square root 34) be sides on a right triangle?

Simplify the expression 10/11(22z) + (a+5) -1

The probability that an adult possesses a credit card is .70. a researcher selects two adults at random. by assuming the independence, the probability that the first adult possesses a credit card and the second adult does not possess a credit card is: