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3 years ago

Is 481216 a rational or irrational

2 answers:

7 0

4821216 is rational. the definition of rational is a number that ends. this number ends in the ones place which means it is rational

DerKrebs [107]3 years ago

4 0

481216 is rational because rational numbers are numbers that are fractions. If you do 481216/1, you get a fraction.

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How do I solve this?

aksik [14]

Multiply the first equation by 2
4x-6y=16

Then add the equations to eliminate x
4x-6y=16
-4x+5y=-10

-y=6
y-=6

Plug the y value in
2x-3(-6)=8
2x+18=8
2x=-10
x=-5

Final answer: (-5,-6)

4 0

3 years ago

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2x - 2 = x-5 I’ll give 35 points plz help

tino4ka555 [31]

Answer:

x = -3

Step-by-step explanation:

2x-x=-5+2

x = -3

8 0

3 years ago

M is the midpoint of RS and R has coordinates (2,5 M has coordinates (6,9) find the coordinates of S

zhuklara [117]

Answer:

what are the answer choices

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

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

Chuck is laying the foundation for a building that will measure 32 feet in length and 15 feet in width. According to local build

Arte-miy333 [17]

Answer:

480 ft³

Step-by-step explanation:

Volume = base area × depth

(32 × 15) × 1

480 ft³

7 0

3 years ago

Read 2 more answers