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4 years ago

Please help

Mathematics

2 answers:

shtirl [24]4 years ago

4 0

I think the answer is for A the explanation is that x represent the amount of time or second that you spend in an elevator and y represent the numbers of floors that the building have.

Deffense [45]4 years ago

3 0

(0,20) The elevator is on floor 20 at time = 0 ( the time you enter the lift)

(20,0) you have descended to ground floor( 0) and it has taken 20 seconds to get there.

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A graph of what has space between possible data values

MakcuM [25]

Answer:

A discrete graph is a graph that is composed of distinct isolated points. A discrete graph has space between possible data values

Step-by-step explanation:

i hope this helps :)

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4 years ago

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Z varies jointly with x, and y, and z=7 when x= 2, y= 2 pleasee I need an answer now!!

Elina [12.6K]

Answer:

(7/4)(2)(2)=7

Step-by-step explanation:

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3 years ago

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HELP PLEASE!!

Nana76 [90]

Answer:

Step-by-step explanation:

even numbers are 3

3/6=1/2

1/2=1/2

1 or 5=2 numbers

2/6=1/3

1/3=1/3

numbers < 3 are 1 and 2

2 numbers

2/6=1/3

1/3 does not =1/2

2 or odd numbers are 2,1,3,5

4/6=2/3

2/3=2/3

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4 years ago

An online instructor sends updates to students via text. The probability model describes the number of text messages the instruc

alexandr402 [8]

Answer:

The expectation the instructor to send each day

E(X) = 3.65

Step-by-step explanation:

Given data x : 0 1 2 3 4 5

P(X=x) : 0.05 0.05 0.1 0.1 0.4 0.3

The given data satisfy the two conditions

I) Given all probabilities are p₁(x) ≥0

ii) sum of all probabilities is equal to one

0.05 + 0.05 + 0.1 + 0.1 + 0.4 +0.3 =1

Therefore given data is discrete probability distribution

Expectation :-

suppose a random variable X assumes the values $x_{1}, x_{2},..x_{n}$ with respective probabilities $p_{1}, p_{2},..p_{n}$ , then the Expectation or Expected value of X , denoted by E(X) = ∑pi xi