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kumpel [21]
3 years ago
13

Sadie sells pianos for $815, and the sales tax rate is 15% of the sales price. About how much is the sales tax on the piano?

Mathematics
2 answers:
-Dominant- [34]3 years ago
7 0
I'm pretty sure it's C. but i dont count on it... i dont have a paper and pancil to work it out

Vlada [557]3 years ago
3 0
10% of 815 is 81.50, and half of that (5%) is 40.75. The sum of these numbers is 10% +5% = 15%, or 81.50 +40.75 = 122.25

Selection A is appropriate.
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Answer:

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Kelly plans to take juice on her camping trip. Which will hold more juice, 8 cans or 2 bottles? How much more?
Alex
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Dafna11 [192]
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Vanyuwa [196]

Answer:  x = 2

=============================================================

Explanation:

Refer to the diagram below.

I've added points D,E,F,G. This helps with labeling the segments and angles, and identifying the proper triangles (to see which are congruent pairs).

Triangle GEA is congruent to triangle GFA. We can prove this using the AAS congruence theorem. We have AG = AG as the pair of congruent sides, and the congruent pairs of angles are marked in the diagram (specifically the blue pairs of angles and the gray right angle markers)

Since triangle GEA is congruent to triangle GFA, this means the corresponding pieces segment GF and GE are the same length.

The diagram shows GF = 3x-4, so this means GE = 3x-4 as well.

----------------------

Through similar steps, we can show that triangle GEC is congruent to triangle GDC. We also use AAS here as well.

The congruent triangles lead to GD = GE. So GD = 3x-4. The diagram shows that GD = 6x-10

Since GD is equal to both 3x-4 and 6x-10, this must mean the two expressions are equal.

----------------------

Now let's solve for x

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