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Ierofanga [76]
3 years ago
15

1. 7 2/3 + 2 7/12

Mathematics
1 answer:
siniylev [52]3 years ago
3 0
It's just not realistic to present a list of 12 math questions and ask for the answers to all of them at once.  Please post only one question at a time and please share your thoughts about how to solve that question.

I'll focus on one problem:    <span>7 2/3 + 2 7/12

Here the LCD (lowest common denominator) is 12.  7 2/3 becomes 7 8/12.

Add 7 8/12 and 2 7/12:


 7 8/12
+2 7/12
-----------
9 15/12                15/12 is not a proper fraction.  Write it as 1 3/12, or 1 1/4.

Then your 9 15/12 becomes (9+1)  1/4, or 10 1/4.</span>
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Can someone help me with this please?
AVprozaik [17]

Answer:

y=70°

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Step-by-step explanation:

Since the two triangles are similar, we know that all of the corresponding angles must be the same.  On the triangle on the left, we can see that the angle formed between sides AB and AC is 60°.  This means that the same angle is formed at Z, which is in the same location on the triangle to the right.  From there, we can find the missing angle, W, from the difference of 180°.

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The same way we found Z, we can also find Y, since it has to be the same as W.

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y = mx + b

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Since 5/4 goes in the mx since it is slope the answer is y = 5/4 - 9

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