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3 years ago

35 POINTS

Mathematics

2 answers:

Artemon [7]3 years ago

5 0

Answer:

<em>there are parrele</em>

Step-by-step explanation:

dmitriy555 [2]3 years ago

3 0

If the lines are parallel, they have no solutions because they never touch

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Jason inherited a piece of land from his great-uncle. Owners in the area claim that there is a 45% chance that the land has oil.

oksian1 [2.3K]

Answer:

0.36 = 36% probability that the land has oil and the test predicts it

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

$P(B|A) = \frac{P(A \cap B)}{P(A)}$

In which

P(B|A) is the probability of event B happening, given that A happened.

$P(A \cap B)$ is the probability of both A and B happening.

P(A) is the probability of A happening.

45% chance that the land has oil.

This means that $P(A) = 0.45$

He buys a kit that claims to have an 80% accuracy rate of indicating oil in the soil.

This means that $P(B|A) = 0.8$

What is the probability that the land has oil and the test predicts it?

This is $P(A \cap B)$ . So

$P(B|A) = \frac{P(A \cap B)}{P(A)}$

$P(B \cap A) = P(B|A)*P(A) = 0.8*0.45 = 0.36$

0.36 = 36% probability that the land has oil and the test predicts it

5 0

3 years ago

Write in point-slope form an equation of the line that passes through the point (8, 9) with slope 7.

Lina20 [59]

Answer:

Step-by-step explanation:

$(8,9)=(x1,y1) \\ m=7 \\ y−y1=m(x−x1) \\ y−9=7(x−8)$

$y - 9 = 7x - 56 \\ y = 7x - 56 + 9 \\ y = 7x - 47$

8 0

3 years ago

What is the equation of this line?<br> y=3/2x −2<br> y=−2x+3/2<br> y=−2x+2/3<br> y=2/3x −2

podryga [215]

The answer is the last one, y = 2/3 -2
Use the rise over run strategy on linear functions such as this one

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3 years ago

Find the geometric mean of 9 and 11.

adoni [48]

The answer would be 3 root 11

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4 years ago

Read 2 more answers

What is the complete factorization of 36y2 − 1?

stiv31 [10]

Answer:

(6y+1)(6y-1)

Step-by-step explanation:

Difference of square (You may want to search it up if you want to learn more)

4 0

3 years ago