The question is "A model train engine is 6 inches long. The real train engine is 42 ft long". " what is the length of the model
1 answer:
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Answer:
as written: 7x^2
perhaps intended: 7x^4
Step-by-step explanation:
As written, the Order of Operations specifies that the only denominator factor is 3, so the expression is interpreted as ...
___
Sometimes grouping of denominator factors is intended, but parentheses are not written as they should be. If the intention is ...
21x^3/(3x^-1)
then the simplification is ...
_____
The applicable rules of exponents are ...
(a^b)(a^c) = a^(b+c)
a^b/a^c = a^(b-c)
For this case we have that by definition, the circumference of a circle is given by:
Where:
d: It is the diameter of the circle
They tell us that:
Substituting:
Thus, the circumference of the circle is 55 centimeters.
Answer:
Option B