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Degger [83]
3 years ago
12

What is the value of X A 21 B 41 C 20 D 22

Mathematics
1 answer:
White raven [17]3 years ago
7 0

Answer:

22

Step-by-step explanation:

Let the bottom be y for the small triangle

So the total length of the bottom is 2y

We can use ratios to solve

x-1       1y

----- = --------

42          2y

Canceling the y's

x-1       1

----- = --------

42          2

Using cross products

2(x-1) = 42

Divide by 2

x-1 = 21

Add 1 to each side

x-1+1=21+1

x = 22

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Answer:

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Step-by-step explanation:

First we can notice all of the answers consist of knowing the lengths, so we must now find the lengths for each segment. To do this, we must use the pythagorean theorem.

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2 years ago
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Answer:

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