The emeperical rule or 68-95-99.7% rule gives the approximate percentage of the data that fall within or standard deviation (68%) two standard deviations (95%) and three standard deviations (99.7%) of the mean. this rule should be applied only when the data is approximately normal.
To start, set up and equation using what you know.
(5/6) / (a/b) = (1/4)
Then, you need to isolate a/b. To do this multiply both sides by a/b and then divide by 1/4
5/6 = (a/b) (1/4)
(5/6) / (1/4) = (a/b)
Next, simplify the left side. To do this, take the inverse of 1/4 (which is 4) and multiply by 5/6 (this is also know as 'flip the second guy and multiply').
(5/6) • 4 = a/b
20/6 = a/b
Lastly, simplify to get the final answer.
10/3 = a/b
I think you are asking if -8x ≥ 40, find x. What we do here is we divide negative 8 by both sides. This gives us x ≥ 5. BUT, we have to be careful!!!! When we divide an inequality on both sides by a negative number, we have to switch the sign. Thus, our answer is x ≤ 5.
Answer:
The minimum number of fish each must have caught is 90 fishes
Step-by-step explanation:
The number of fishes Tisha's net can hold = 15
The number of fishes Dana's net can hold = 18
Let the total number of fishes both Tisha and Dana caught = X
15 × A = 18 × B = X
Therefore, X is the lowest common multiple (LCM) of 15 and 18 given as follows;
15 = 3 × 5
18 = 3 × 6
Therefore, the LCM of 18 and 5 = 3 × 5 × 6 = 90
Which gives, the minimum number of fish each must have caught = 90 fishes.