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8090 [49]
3 years ago
11

-3√8 is a rational number or not

Mathematics
2 answers:
Free_Kalibri [48]3 years ago
7 0

9514 1404 393

Answer:

  not

Step-by-step explanation:

The square root of 8 is not the root of a perfect square, so it is irrational. Multiplying it by a rational number gives an irrational product.

  -3√8 is irrational

Advocard [28]3 years ago
7 0
Not a rational number.
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Which of the following is a polynomial?
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Answer:

B

Step-by-step explanation:

8x^2+x+3 follows the rules of being a polynomial due to the three terms being added to each other, and that they are in descending order.

6 0
3 years ago
You have a 10×10×10 inch cube that is made up of 1×1×1 inch cubes. You paint the outside of the big cube red. How many of the li
natima [27]
The total amount of little cubes on the surface is 600, since there is 100 cubes on one face and there are 6 faces (6 times 100). But, there is overlap because the cubes on the edges are painted on more than one edge. There are 12 edges, and every edge has 10 that need to be subtracted. So that’s a total of 120 that need subtracting, and 600-120 is 480.
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3 years ago
Karen says every equilateral triangle is acute is this true?
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7 0
4 years ago
A​ state's recidivism rate is 17​%. This means about 17​% of released prisoners end up back in prison​ (within three​ years). Su
Bezzdna [24]

Answer:

a) 2.9%

b) Option B is correct.

The prisoners must be independent with regard to recidivism.

Step-by-step explanation:

Probability that one prisoner goes back to prison = 17% = 0.17

a) The probability that two prisoners released both go back to prison = 0.17 × 0.17 = 0.0289 = 2.89% = 2.9% to 1 d.p

b) The only assumption taken during the calculation is that probability of one of the prisoners going back to prison has no effect whatsoever in the probability that another prisoner goes back to prison. That is the probability that theses two events occur are totally independent of each other.

If they weren't, we wouldn't be able to use 0.17 as the probability that the other prisoner goes back to prison too.

7 0
3 years ago
Gaby plays on volleyball team. In the two games she scored 3/5 of the total number of points her team scored. Her team scored 25
hjlf

Answer:

Gaby scored 27 points.

Step-by-step explanation:

First, you have to find 3/5 of both of the numbers.

What I did was I found 1/5 of each number and multiplied it by 3.

25/5=5, so 1/5 of 25 is 5. 5(3)= 15, so Gaby scored 15 points in the first game.

20/5= 4, so 1/5 of 20 is 4. 4(3)= 12, so Gaby scored 12 points in the second game.

Finally, add 15+12, which equals 27 :).

5 0
3 years ago
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