I don’t have 11 or 13 or a 2 or 5
Assuming the distribution is continuous, you have

If instead the distribution is discrete, the value will depend on how the interval of number between 1 and 29 are chosen - are they integers? evenly spaced rationals? etc
Answer: a = 10
Step-by-step explanation: 6a + 12 = 72
-12 -12
6a = 60
6a/6 = 60/6
a = 10
29 fish were caught. 42 times .70
Answer:
In general, an unresolved nth root, commonly involving a radical symbol ^n√x, is known as a surd. However, the term surd or "surd expression" (e.g., Hardy 1967, p. 25) can also be used to mean a sum of one or more irrational roots. In the mathematical literature, the term arises most commonly in the context of quadratic surds.
Step-by-step explanation: