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Studentka2010 [4]

3 years ago

9

Nadia is picking out some movies to rent, and she is primarily interested in horror films and mysteries. She has narrowed down h

er selections to 13 horror films and 7 mysteries.
Step 1 of 2 : How many different combinations of 3 movies can she rent?

1 answer:

Molodets [167]3 years ago

8 0

Answer:

I believe 8000 would be the answer

Step-by-step explanation:

13+7 =20

20^3=8000

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Determine which relation is a function.

Nezavi [6.7K]

Functions can only have 1 value of 'x'.

Option A is not a function because it has two -5's

Option B is not a function because it has two -2's.

Option C is a function.

Option D is not a function because it has two 6's.

5 0

3 years ago

HELP PLEASE!!! I WILL FIVE STAR!!

ivann1987 [24]

Answer:

Step-by-step explanation:

You can't answer c. There is not enough information. Other than there are 14 boys that went, you know nothing about how many went.

Girls going = (3/5) * 20 = 12

Girls not going = 20 - 12 = 8

4 0

3 years ago

What is the equation of the graph <img src="https://tex.z-dn.net/?f=y%3Dx%5E3" id="TexFormula1" title="y=x^3" alt="y=x^3" align=

Galina-37 [17]

Answer:

C. y = 2 (x + 3)³ − 4

Step-by-step explanation:

y = x³

Stretch vertically by 2.

y = 2x³

Shift horizontally 3 units to the left.

y = 2 (x + 3)³

Shift vertically 4 units down.

y = 2 (x + 3)³ − 4

8 0

3 years ago

The probability of drawing a heart from a standard deck of cards is 0.25. You record the car do you draw and return the car befo

Licemer1 [7]

Answer: C) 0.112

Step-by-step explanation:

In binomial distribution with parameters n (Total trails) and p (probability of getting success sin each trial) , the probability of getting success in x trials is given by :-

$P(X=x)=^nC_xp^x(1-p)^{n-x}$

Given : The probability of drawing a heart from a standard deck of cards is 0.25

Here , getting heart is the success.

Then p= 0.25

For n= 20

The probability that you will draw a heart seven times i.e. x= 7:

$P(X=7)=^{20}C_7(0.25)^7(1-0.25)^{20-7}$

$P(X=7)=\dfrac{20!}{7!(20-7)!}(0.25)^7(1-0.25)^{20-7}\ \ [\because\ ^nC_r=\dfrac{n!}{r!(n-r)!}]$

$=\dfrac{20\times19\times18\times17\times16\times15\times14\times13!}{7!13!}(0.25)^7(0.75)^{13}\\\\=77520(0.00006103515625)(0.0237572640181)\\\\=0.112406195476\approx0.112$

Hence, the probability that you will draw a heart seven times = 0.112

Thus , the correct answer is C) 0.112 .

8 0

3 years ago

The times for 5 runners in a 30-meter dash were 6.44 seconds, 6.2 seconds, 6.04 seconds, 7.14 seconds, and 6.48 seconds. Wr

Scorpion4ik [409]

Answer:

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Step-by-step explanation:

4 0

3 years ago