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A midpoint can be found on a line segment, but not a polygon like a triangle.  If you're referring to the centroid, or some other such point in or around a triangle, you will need to take a few steps to do so.  The centroid is my best guess to what you're referring to, and … Read more
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When changing a decimal to a fraction, it helps to read it aloud. 0.45 is "45 hundredths" which means the same thing as 45/100.  What remains is to reduce this fraction if possible; that is, try to find a common factor between both the numerator and denominator and divide each by that factor.  Here, 45 … Read more
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The LCM of two numbers is their product divided by the GCD (or GCF).   Factoring each gives: 75 = 3*5*5 = 3* 5^2 100 = 2*2*5*5 = 2^2*5^2   The GCD is 5*5, or 25.  The product of 75 and 100 (75 x 100) = 7500. Taking 7500/25, we get 300 as the LCM.
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If you read the decimal version of 4.8 out loud, it should be "four and eight tenths."  This will always give you a good place to start when changing a decimal into an equivalent fraction. Now, this is a mixed number: 4 and 8/10. To further simplify it as a mixed number, we can leave … Read more
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If you break down each of these numbers into their prime factorizations (one way to do this is with a factor tree), we have 68 = 2 x 2 x 17 = 2^2 x 17, and 24 = 2 x 2 x 2 x 3 = 2^3 x 3.   68 has two distinct factors, 2 … Read more