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xxMikexx [17]
3 years ago
11

8x -y=2. 5x-4y=3 please help solve this system by substition method

Mathematics
1 answer:
Vitek1552 [10]3 years ago
6 0
8x-y=2  ---> y=8x-2
5x-4y=3

5x-4(8x-2)=3
5x-32x+8=3
-27x+8=3
-27x=-5
x= 5/27

8(5/27)-y=2
40/27-y=2
y=-14/27
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8.898% will remain after 20000 years.

Step-by-step explanation:

First week need to know the half-life of carbon-14.

In this case it's 5,730 years.

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5 0
4 years ago
Find the missing probability.
Westkost [7]

The value of the missing probability is:

P(A) = 1/5

So the correct option is D.

<h3>How to find the missing probability?</h3>

First, we know that:

P(A∩B) = probability that events A and B are true = 3/100

And we also know that:

P(B|A) = probability that event B is true given that event A is true = 3/20

Here we have the rule:

P(A∩B) = P(B|A)*P(A)

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Solving for P(A), we get:

(3/100)*(20/3) = 1/5 = P(A).

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brainly.com/question/25870256

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4 0
2 years ago
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8 0
2 years ago
the population of a local species of dragonfly can be found using an infinite geometric series where a1=30 and the common ratio
diamong [38]
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7 0
4 years ago
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sineoko [7]

Answer:

264cm2

Step-by-step explanation:

the length of line in green = 5 cm

the length of line in yellow = 3 cm

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5 0
4 years ago
Read 2 more answers
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