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OlgaM077 [116]
3 years ago
11

What is the length of AC?

Mathematics
1 answer:
EastWind [94]3 years ago
8 0

Answer:

Step-by-step explanation:

the triangles are proportional

9/81=1/3

140-x/x=1/3

3(140-x)=x

420-3x=x

4x=420

x=420/4 = 105

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Answer:

1.85x10^{19} attempts are required to find a matching pair if the digital fingerprint is 64 bits long.

3.40*10^{38} attempts are required to find a matching pair if the digital fingerprint is 128 bits long.

Step-by-step explanation:

Each bit has two options. So

How many attempts are required to find a matching pair if the digital fingerprint is 64 bits long?

So for each of the 64 bits, we have the following number of options.

2 - 2 - 2 - 2 -... - 2

So, in all, there are

T = 2^{64} = 1.85x10^{19}

options.

So, 1.85x10^{19} attempts are required to find a matching pair if the digital fingerprint is 64 bits long.

128 bits long?

Using the same logic as the first question.

T = 2^{128} = 3.40*10^{38}

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3 years ago
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4 0
3 years ago
I need this done for tonight please help I’m stuck
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B

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