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NemiM [27]
3 years ago
9

Please I need help asap.

Mathematics
1 answer:
Burka [1]3 years ago
4 0
QR is the median of the trapezoid, so its length is the average of the top and bottom bases. Write that. Say (length of QR)=1/2 of (length of the top + length of the bottom). That gives you a nice simple equation that you can easily solve for 'x'.
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3 years ago
Please help. I do not know how to answer this question. :\
Zanzabum

Answer:

  (6 + m²)(6 + m²) . . . . . . . lower left selection

Step-by-step explanation:

When in doubt, you can multiply out the offered factorizations and see which one gives you the given expression.

___

A lot of math is about pattern matching. The given trinomial has first and last terms that are perfect squares. The first term is the square of 6. The last term is the square of m². The middle term is double the product of these two square roots: 2·(6m²) = 12m².

This pattern matches the special form of the square of a binomial:

  (a + b)² = a² + 2ab + b²

This special form is useful to commit to memory (at least while you're in math classes in school).

So, when you see 6² + 2·6·m² + (m²)², you can recognize that it is the square ...

  (6 + m²)²

When this is written out in the way the answer choices are written, it looks like ...

  (6 + m²)(6 + m²)

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Find the surface area #3
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