Answer:
C. Yes, 3.5.
Step-by-step explanation:
If there is a relationship of direct proportionality for every ordered pair of the table, then the constant of proportionality must the same for every ordered pair. The constant of proportionality (
) is described by the following expression:
(1)
Where:
- Input.
- Output.
If we know that 
, 
and 
, then the constants of proportionalities of each ordered pair are, respectively:
Since 
, the constant of proportionality is 3.5.
That means the average of all data point equal:
(99+122+103+113+109+x)/6 = 103
===> (546+x)/6 = 103===> 546+x=618 & x=618-546=72, so x =72
Answer:
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Step-by-step explanation:
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Answer:
Step-by-step explanation:
The idea is to find out how much steel it takes to make 1 rod, then multiply that amount by 192. The amount of steel in a rod is found in the volume of steel in each rod. The formula for the volume of a cylinder is
For us this formula looks like this:
which, in terms of pi, is 240π. That's not a very useful measure, so rounded to the nearest whole number, each rod take 754 cubic centimeters of steel. Multiply that by 192 and you get that you need
144,768 cubic centimeters of steel to make 192 rods of that size.
Answer
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