Answer:
mini disc diameter:disc diameter
14cm:21cm = 7:10.5 = 3.5:5.25 = 1:1.5
Answer:

Step-by-step explanation:
We can write the following system of equations:

Adding both equations together, we isolate
and get:

Plugging
in any of the equations, we can solve for
:

Verify that the solution pair
works 
Therefore, the two numbers are
.
Answer:
x = 50.9
Step-by-step explanation:
35.6 = √(15.3²) + √(x²)
35.6 = 15.3 + x
x = 35.6 + 15.3
x = 50.9
Answer: 10
18 divide by 3 is 6 because you always divide first is this case
9-6+7 now solve straight across
9 minus 6 is 3 plus 7 is 10
Step-by-step explanation: Also
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