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enot [183]
3 years ago
15

A stragitic defense strategy calls for missiles to be fired independelty at a target until the target us hit. Let the probabilit

y that any missile will hit the target be .8 and x=# of missiles fired at the target
Mathematics
1 answer:
AleksandrR [38]3 years ago
7 0

Points:

The question is incomplete as the value of x is not given and what is required is not stated.

<em>However, I'll assume that x = 5</em>

Going by the details of the question, possible questions could be:

  • Expected number of hits
  • Variance and Standard Deviation of hits

Answer:

See Explanation

Step-by-step explanation:

Given

Represent the probability with p.

So:

p = 0.8

Solving (a): The expected number of hits.

In probability, the expected number is calculated as:

E(x) = p * x

Substitute values for p and x

E(x) = 0.8 * 5

<em>Remember that 5 is an assumed value of x</em>

E(x) = 4

<em>Hence, the expected number of hits when 5 missiles is fired is 4</em>

Solving (b): Variance

In probability, variance is calculated as:

variance = x*p*(1-p)

Substitute values for p and x

variance = 5*0.8*(1-0.8)

variance = 5*0.8*0.2

variance = 0.8

<em>Hence, the variance is 0.8</em>

Solving (c): The standard deviation

In probability, the standard deviation is calculated as:

SD= \sqrt{Variance

Substitute values for variance

SD= \sqrt{0.8

SD= 0.89

<em>Hence, the standard deviation is 0.89</em>

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xxTIMURxx [149]

Answer: 21

Step-by-step explanation: We are given that angle ABC is dilated with center P.

Scale factor=3

Angle A'B'C' is formed after dilation of angle ABC.

Dilation: when a figure is dilated by scale factor a then, the figure shape does not change.

After dilation, the size of figure changes.

The initial figure and the figure obtained after dilation are similar in shape.

When two figures are similar then , the angles of one figure are  congruent to its corresponding angles in other figure and ratio of their corresponding sides are equal.

The measure of angle ABC=21'

After dilation by scale factor 3 then, the measure of angle A'B'C' remains=21'

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8 0
3 years ago
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Answer:

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Step-by-step explanation:

Since volume= length times Width times height, you do 3 times 6 times 30= 540 ft^cubed.

3 0
3 years ago
Please help meeeeeee
LuckyWell [14K]

Answer:

it's the bottom left one

Step-by-step explanation:

Im just a kid, don't ask

So -1/4x+1/2 x would be 1/4 x because -0.25+0.5=0.25

translating 2/3 into 4/6, so we do 4/6-2/6 which would be 1/2.

:) Im an idiot lol

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1 year ago
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Ticket Taker Tony collects 90 tickets in 5 minutes. Ticket Taker Tina collects 128 tickets in 8 minutes. Which ticket taker coll
SpyIntel [72]

Answer:

Ticket Taker Tony collects more tickets per minute.

Step-by-step explanation:

In order to find out which ticket taker collects more tickets per minute, you need to solve for how many tickets each Ticket Taker collects per minute to compare.  Since 90:5 and 128:8 are different ratios, you need to find the unit rate, or how many tickets each collects per minute.  To find unit rate, you divide the numerator by the denominator:

Ticket Taker Tony:  \frac{90 tickets}{5 minutes} = \frac{18 tickets}{1 minute}

Ticket Taker Tina:  \frac{128 tickets}{8 minutes} = \frac{16 tickets}{1 minute}

Every minute, Tony collects 18 tickets, while Tina only collects 16, so Ticket Taker Tony collects more.  

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3 years ago
What is the slope of this graph?
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Where is the graph? do you have a pic or website?
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