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galina1969 [7]
3 years ago
8

Which statement is always true?

Mathematics
1 answer:
Ugo [173]3 years ago
8 0
The product of two rational numbers is rational is the correct answer
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Tim throws darts at a dartboard that has numbers one through 20 in a bull’s-eye in the middle. 10 throws a dart 50 times, and he
Lesechka [4]

Answer:

D.) 1/5

Explanation:

Experimental probability is the ratio of the number of successes to the number of trials.

In this case, success is a bulls-eye.  Tim had 10 bulls-eyes.  The total number of trials  is 50.  This makes the experimental probability 10/50, or 1/5.

6 0
3 years ago
Read 2 more answers
a) A six sided dice is unbiased . It is numbered 1,2,3,4,5 and 6 on its faces. The dice is rolled several times until it lands o
masha68 [24]
P(not 5) =5/6 and P(5) = 1/6
If the first 5 is rolled on the 5th roll then the first four rolls were not 5
P(5 on fifth roll) = 5/6 x 5/6 x 5/6 x 5/6 x 1/6 = 5^4/6^5 = 625/7776 = 0.080375...
6 0
2 years ago
F(x)=-5x+2 and g(x)=1/2x+4 find f(g(12))
skad [1K]

Answer:

- 48

Step-by-step explanation:

If you want to learn more about this concept, it's called composition of functions.

First, you plug in g(x) as if it were x into f(x).

f(g(x))= -5 (1/2x + 4) + 2

= -5/2x - 20 + 2

= -5/2x - 18

Then, plug in the value given, as x.

= -5/2 (12) - 18

= -30 - 18

= - 48

I hope this helped!

3 0
3 years ago
A hobby store prices model train track using a proportional relationship between the length of track (in inches) and the cost in
Andrei [34K]

Answer:

2.5

Step-by-step explanation:

The constant of probability is 16/6.4=2.5

3 0
3 years ago
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Which of these is not a possible r-value?
Tems11 [23]

Answer:

Step-by-step explanation:

A

4 0
3 years ago
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