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Delicious77 [7]
2 years ago
5

Help me pls just label answers nevermind

Mathematics
1 answer:
anzhelika [568]2 years ago
7 0
There’s nothing there? Lol
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Since BC is parallel to DE, triangles ABC and ADE are similar. What are the lengths of the unknown sides?
Yuri [45]

Answer:

Option D. AC= 10 cm and CE= 5 cm

Step-by-step explanation:

From the given figure two triangles ΔABC and ΔADE are similar and two lines BC║DE.

From these similar triangles we know

\frac{AB}{AD}=\frac{BC}{DE}=\frac{AC}{AE}

\frac{8}{12}=\frac{BC}{9}=\frac{AC}{AE}

Therefore \frac{AC}{AE}=\frac{8}{12}=\frac{2}{3}

Or AC=\frac{2}{3}AE

Now from pythagoras theorem

AE = √(AD²+ED²) = √(12²+9²) = √(144+81) =√225 = 15 cm

Since we know side AC = \frac{2}{3}AE

                                        = \frac{2}{3}\times 15

                                        = 10 cm

Therefore AC = 10 cm and AE = 15cm and CE = (15-10) = 5 cm


8 0
3 years ago
What is the area of this composite shape enter you answer in the box
matrenka [14]

Answer:

2496

Step-by-step explanation:

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4 0
3 years ago
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David wants to my have a board for $398.50. He has saved $350 so far. Stores offering a discount for 15% for the month of Januar
bija089 [108]

Answer:

Yes, he will

Step-by-step explanation:

398.50 x .15 = 59.775

398.50-59.775=338.725

350>338.725

5 0
3 years ago
What is the probability when rolling a fair twenty-two sided die that a multiple of four will
Inga [223]

Answer:

5/22 or 0.22%

Step-by-step explanation:

5 0
4 years ago
Write an equivalent expression for 4(2x+5
Verizon [17]
4(2x +5) = (8x + 20) 

8x =20 is an equivalent expression
 

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3 years ago
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