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3 years ago

Which two lines are parallel: y=3x+2, y=3x+4, y+2x+4

Mathematics

1 answer:

sweet [91]3 years ago

7 0

Y=3x+2 and y=3x+4, because y in the second case will be=y+2 from the first case

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Please help me idk this

Snezhnost [94]

Since there are 5 boxes, and she's dividing each of them into 8ths,then you can take 8 from each and multiply it by 5 to get the answer which is 40.

4 0

3 years ago

What is the denominator of the reduced fraction representing the probability of winning Fantasy Five (a lottery game where the w

Nataly [62]

Answer:

Denominator = 69090840

Explanation:

In a Fantasy Five lottery game, we have to correctly guesses the five numbered balls to win the game.

So we have to select five balls, there are total 39 balls.

The probability of correctly selecting a ball is

P(ball) = 1/total no. of balls

The probability of correctly selecting 1st ball is

P(1st ball) = 1/39

Now there are 38 balls remaining

The probability of correctly selecting 2nd ball is

P(2nd ball) = 1/38

Now there are 37 balls remaining

The probability of correctly selecting 3rd ball is

P(3rd ball) = 1/37

Now there are 36 balls remaining

The probability of correctly selecting 4th ball is

P(4th ball) = 1/36

Now there are 35 balls remaining

The probability of correctly selecting 5th ball is

P(5th ball) = 1/35

The probability of selecting all 5 balls correctly is

P(5 balls) = P(1st ball)*P(2nd ball)*P(3rd ball)*P(4th ball)*P(5th ball)

P(5 balls) = 1/39*1/38*1/37*1/36*1/35

P(5 balls) = 1/69090840

Therefore, the denominator of the reduced fraction representing the probability of winning Fantasy Five lottery game is 69090840.

6 0

3 years ago

Which means the sum of w and 3.4 is greater than or equal to 10.5?

DochEvi [55]

Sounds that you have several answer choices. If that's the case, you need to share those choices. All of them are probably inequalities.

5 0

3 years ago

Assume the sample variances to be continuous measurements. Find the probability that a random sample of 25observations, from a n

konstantin123 [22]

Answer:

a) $P(4S^2 > 4*9.1) = P(\chi^2_{24} >36.4) = 0.0502$

b) $P(13.848$ Step-by-step explanation:

Previous concepts

The Chi Square distribution is the distribution of the sum of squared standard normal deviates .

For this case we assume that the sample variance is given by $S^2$ and we select a random sample of size n from a normal population with a population variance $\sigma^2$ . And we define the following statistic:

$T = \frac{(n-1) S^2}{\sigma^2}$

And the distribution for this statistic is $T \sim \chi^2_{n-1}$

For this case we know that n =25 and $\sigma^2 = 6$ so then our statistic would be given by:

$\chi^2 = \frac{(n-1)S^2}{\sigma^2}=\frac{24 S^2}{6}= 4S^2$

With 25-1 =24 degrees of freedom.

Solution to the problem

Part a

For this case we want this probability:

$P(S^2 > 9.1)$

And we can multiply the inequality by 4 on both sides and we got:

$P(4S^2 > 4*9.1) = P(\chi^2_{24} >36.4) = 0.0502$

And we can use the following excel code to find it: "=1-CHISQ.DIST(36.4,24,TRUE)"

Part b

For this case we want this probability:

$P(3.462 < S^2$

If we multiply the inequality by 4 on all the terms we got:

$P(3.462*4 < 4S^2 < 4*10.745)= P(13.848< \chi^2$ And we can find this probability like this: $P(13.848$ And we use the following code to find the answer in excel: "=CHISQ.DIST(42.98,24,TRUE)-CHISQ.DIST(13.848,24,TRUE)"

8 0

3 years ago

I need help with this

igomit [66]

I think its 63 3x3x7

3 0

3 years ago