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son4ous [18]
3 years ago
7

ABC and AED are straight lines. BE and CD are parallel. AC = 12.3cm AB = 8.2cm BE = 3.8cm a) Work out length CD. AD = 9.15cm

Mathematics
1 answer:
elena-14-01-66 [18.8K]3 years ago
6 0

Answer:

15.33cm

Step-by-step explanation:

when you try to draw out this figure, satisfying the fact that Ad and Ac are both straight lines. you find the ultimately  it forms a right-angled triangle with sides AC and AD and hypotenuse CD.

Now, you may use Pythagoras theorem to solve:

AC^2 + AD^2 = CD^2

12.3^2 + 9.15^2 = CD^2

CD^2 = 235.0125

CD = square root of 235.0125 = 15.33cm

Hope this helps

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Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Select the correct answer from each drop-down menu.
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Answer:

-2(57+8) = 14 + 6x

step 1 -2 x 57 and -2 x 8   =

step 2 -114-16 = 14 + 6x

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step 3 -114 = 30 + 6x

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step 3         +16   +16

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6 0
2 years ago
If Levi purchased a total of 50 ride tickets and game tickets at the amusement park and spent $29. If right tickets cost $.75 ea
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Answer: he purchased 16 ride tickets.

Step-by-step explanation:

Let x represent the number of ride tickets that he purchased.

Let y represent the number of game tickets that he purchased.

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Substituting x = 50 - y into equation 1, it becomes

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5 0
3 years ago
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