Is 2 1/6 a rational number?

Mathematics

2 answers:

denis23 [38]3 years ago

8 0

Answer:

yes a rational number is a number expressed or can be expressed as a fraction

Step-by-step explanation:

marin [14]3 years ago

3 0

Answer:

Yes, because this can be represented by a fraction with numerator and denominator belonging to Z.

Sorry if my english is poor

Step-by-step explanation:

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3. An apartment complex has 20 apartments. The number of bedrooms is represented in the box-and-whisker plot as shown.

pav-90 [236]

Answer:

Median: 3

Lower quartile: 2.2

Upper quartile: 4.7

Minimum: 0

Maximum: 6

Good luck and and good day!

7 0

3 years ago

Suppose you take a 15 question True or False quiz and you guess on every problem. You only get 3 correct. (a) What is the probab

lana66690 [7]

Answer:

0.648

No, that is not an unusually low number of correct guesses.

Step-by-step explanation:

Suppose you take a 15 question True or False quiz and you guess on every problem. You only get 3 correct. Then

$p=\dfrac{3}{15}=\dfrac{1}{5}=0.2$ - correct;
$q=1-p=1-0.2=0.8$ - o\incorrect.

The probability of getting 3 or fewer correct guesses is

$P(\text{3 or fewer})\\=P(0)+P(1)+P(2)+P(3)\\ \\=C^{15}_0p^0q^{15-0}+C^{15}_1p^1q^{15-1}+C^{15}_2p^2q^{15-2}+C^{15}_3p^0q^{15-3}\\ \\=1\cdot q^{15}+15pq^{14}+105p^2q^{13}+455p^3q^{12}\\ \\=(0.8)^{15}+15\cdot 0.2\cdot (0.8)^{14}+105\cdot (0.2)^2\cdot (0.8)^{13}+455\cdot (0.2)^3\cdot (0.8)^{13}\\ \\\approx 0.648$