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V125BC [204]
3 years ago
14

How many way can 4 people line up out of 20?

Mathematics
2 answers:
Angelina_Jolie [31]3 years ago
7 0

Answer:

80

Step-by-step explanation:

To do this problem you multiply 20x4 and that answer is 80.

Pani-rosa [81]3 years ago
3 0

Answer:

80

Step-by-step explanation:

20 x 4 = 80

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If AC is parallel to DE, find X
UNO [17]

Answer: x = 50

Concept:

Here, we need to know the idea of alternative interior angles and the angle sum theorem.

<u>Alternative interior angles</u> are angles that are formed inside the two parallel lines, and the values are equal.

The <u>angle sum theorem</u> implies that the sum of interior angles of a triangle is 180°

If you are still confused, please refer to the attachment below or let me know.

Step-by-step explanation:

<u>Given information:</u>

AC ║ DE

∠ABC = 85°

∠A = 135°

<u>Find the value of ∠BAC</u>

∠A + ∠BAC = 180° (Supplementary angle)

(135°) + ∠BAC = 180°

∠BAC = 45°

<u>Find the value of ∠BCA</u>

∠ABC + ∠BAC + ∠BCA = 180° (Angle sum theorem)

(85°) + (45°) + ∠BCA = 180°

∠BCA = 50°

<u>Find the value of x (∠EBC)</u>

∠EBC ≅ ∠BCA (Alternative interior angles)

Since, ∠BCA = 50°

Therefore, ∠EBC = 50°

\Large\boxed{x=50}

Hope this helps!! :)

Please let me know if you have any questions

8 0
1 year ago
I did the no question and 86 through 88
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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

Fixed cost is $100 and 20 items cost $500 to produce.

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So, C(x)=20x+100, where C is total cost and x is the number of items produced.

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3 years ago
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