Answer:

Step-by-step explanation:
Because the problem is not an equation (i.e., it has no equals sign), there is nothing to solve. However, the expression can be simplified:

19in__________________________________________________________________________________________________________________
Divide 63 by the denominator of the probability: 63/9= 7
Now, multiply 7 by the numerator of the fraction to get the number of red marbles are 7x7=49
Okay I'll try to show it step by step
Step 1. So first you need to recognise that the diagram is a right angled triangle, with the right angle being at the bottom. This means we can do Pythagoras' Theorem.
Step 2. Now that you know you can use Pythagoras' Theorem, you can apply it. If you don't know, the theorem is a² + b² = c², with, in this case, a being 5 and b being 8. This means we can do 5² + 8² = 25 + 64 = 89.
Step 3. From the previous step, we now know that the length of the side including x is √89, and because we know that part of this side is 3, if we subtract 3 from √89 we get the value of x, so: √89 - 3 = 9.434 - 3 = 6.434, which is your answer.
I hope this helps!
The answer is 14.
You’d evaluate using PEMDAS