gabby0148
02.12.2021 •
Mathematics
Q. 3. On a recent math test, Aubrey was asked to find the LCD of and and then to write equivalent fractions using this LCD. Aubrey felt
confident that she answered the question correctly, but when she received her graded test, her answer was marked as incorrect. View
Aubrey's work below to find her mistake and then describe to Aubrey the mistake you found.
Aubrey's work:
Multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24
Multiples of 4: 4, 8, 12, 16, 20, 24
LCD of 3 and 4 is 24. Equivalent fractions with the LCD: and
Solved
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Ответ:
7 in
Step-by-step explanation:
we know that
The perimeter of rectangle is given by the equation
where
L is the length
W is the width
In this problem we have
substitute
simplify
solve for L
That means ----> The length of rectangle must be less than 8 inches
therefore
The values of 8 in, 9 in and 10 in are not possible or the length of the rectangle
The value of 7 in is possible for the length of the rectangle