The line behind the 5 I do believe about
Answer: 1/6
Step-by-step explanation: To find the probability of rolling a 4, let's use our ratio for the probability of an event which is shown below.
Number of favorable outcomes/total number of outcomes
Since only one side of a number cube has a 4 on it, the number of favorable outcomes for rolling a 4 is 1 and since there are six sides to a number cube and it's equally likely that the cube will land on any of these sides, the total number of outcomes is 6.
So the probability of rolling a 4 is 1/6 which is equivalent
to 0.167 or 16.7%.
That means it is't likely that you would roll a 4 for instance but it's just as likely as rolling any other number.
We know that the smaller base is x cm, the greater base is x+4 cm, and that the height is x/2 cm.
Since the area of a trapezium is given by
If we plug the expressions we have
If this must equal 84, we can solve for x as follows: start with
Multiply both sides by 4:
Subtract 336 from both sides:
We can divide both sides by 2 to make computation simpler:
Use the quadratic formula (or any mean you prefer) to solve this equation and get the solutions
We can't accept the negative solution, because it would imply
and we can't have negative side lengths. So, the answer is 12.
The answer is b because it changes orientation when flipped, but does not change size.
