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Hunter-Best [27]
3 years ago
14

Solve for x khan academy solve similar triangles advanced

Mathematics
1 answer:
melamori03 [73]3 years ago
8 0

Answer:

x = 10/3

Step-by-step explanation:

The question is incomplete without the diagram as this would enable us solve for x. Find attached the diagram used for solving the question.

We can tell from the question we are to compare two triangles drawn together (smaller one drawn in a bigger one) using similar triangles.

Using similar triangles to solve for x,

∆ABC = ∆ADE

∠CBA = ∠EDA = 90°

Let's relate the ratio of their corresponding sides.

(Adjacent/opposite) in ∆ABC

= (Adjacent/opposite) in ∆ADE

AB/CB = AD/ED

AB = 6

CB = 2

AD = AB + BD = 4+6 = 10

ED = x

6/2 = 10/x

3 = 10/x

3x = 10

x = 10/3

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Step-by-step explanation:

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Answer:

The answer is (π/4)*r

Step-by-step explanation:

Formula length of arc when the angle given is in radian as the case given

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7 0
4 years ago
9. Evaluate (-7) -10 ÷ (-28)-10<br> pls solve fast
Juli2301 [7.4K]

Answer:

17/38 or ≈ 0.45

Step-by-step explanation:

(-7) -10 / (-28)-10

= -17 / -38

= 17/38

You can keep the answer in fraction as 17/38 or ≈ 0.45

Hope this help you :3

7 0
3 years ago
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Anuta_ua [19.1K]

Answer:

73

Step-by-step explanation:

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3 0
3 years ago
Explain why ΔABC cannot be shown to be congruent to ΔCDA.
igomit [66]

There isn't enough info to prove the triangles to be congruent or not. So we can't say for sure either way.

We have angle CAD = angle ACB given by the arc markings, and we know that AC = AC due to the reflexive theorem. However we are missing one third piece of information.

That third piece of info could be....

  • AD = BC which allows us to use SAS
  • angle ACD = angle CAB which allows us to use ASA
  • angle ABC = angle CDA which allows us to use AAS (slight variation of ASA)

Since we don't know any of those three facts, we simply don't have enough information.

side note: If AB = CD, then this leads to SSA which is not a valid congruence theorem. If we had two congruent sides, the angle must be between the two sides, which is what AD = BC allows.

4 0
3 years ago
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