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2 years ago

Select all of the following tables which represent y as a function of x.

Mathematics

1 answer:

Schach [20]2 years ago

3 0

Answer:

the second and third one

Step-by-step explanation:

two y's that are the same can't have 2 outcomes

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Find the expected value and the variance of the number of times one must throw a die until the outcome 1 has occurred 5 times.

Kazeer [188]

Answer: E(X) = 30; Var[X] = 180

Step-by-step explanation: This is a Bernoulli Experiment, i.e., the experiment is repeated a fixed number of times, the trials are independents, the only two outcomes are "success" or "failure" and the probability of success remains the same, So, to calculate Expected Value, which is the mean, in these conditions:

$E(X)=\frac{r}{p}$

r is number of times it is repeated

p is probability it happens

Solving:

$E(X)=\frac{5}{1/6}$

E(X) = 30

Variance is given by:

$Var[X]=\frac{r(1-p)}{p^{2}}$

$Var[X]=\frac{5(1-1/6)}{(1/6)^{2}}$

$Var[X]=5.\frac{5}{6}.6^{2}$

Var[X] = 180

Expected Value and Variance of the number of times one must throw a die until 1 happens 5 times are 30 and 180, respectively.

4 0

3 years ago

Find A ∩ B given A = {the Integers} and B = {the Rational numbers}.

garri49 [273]

Step-by-step explanation:

Since, every integer can be expressed as rational number.

$\therefore A\cap B = B \\$

8 0

3 years ago

What is the graph of the function f(x) = the quantity of x squared plus 4 x minus 12, all over x plus 6?

LenaWriter [7]

X^2 + 4x -12 = (x+6)(x-2)

so
(x+6)(x-2)
---------------- = x - 2
x + 6

f(x) = x -2

answer is B.

because
if x = -6
then y = -6 - 2 = -8

(-6,-8) is the order pair

5 0

3 years ago

WILL GIVE BRAINLIEST What are all the height under 2 inches

Lena [83]

Answer:

:The answer is 13 1/8

Step-by-step explanation:

∛≡㏒ É multiplied by 18-5=13 1/8

6 0

2 years ago

Can someone help me with a and c only

Nataly [62]

Answer: the answer to C is 4,176,000,000,000,000

Step-by-step explanation:

2.9(105)(7.2)(102)

5(10−8)

(2.9)(100000)(7.2)(102)

5(10−8)

(290000)(7.2)(102)

5(10−8)

2088000(102)

5(10−8)

(2088000)(100)

5(10−8)

208800000

5(10−8)

208800000

100000000

)

208800000

20000000

=4176000000000000

7 0

3 years ago