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lana66690 [7]
2 years ago
6

Can anyone help me do this please? No Links!!

Mathematics
2 answers:
tia_tia [17]2 years ago
8 0

Answer:

$100,500............

Debora [2.8K]2 years ago
6 0

Solution given:

1st term[a] :$34000

common difference [d]=$3500

20 th term=?

we have

nth term=a+(n-1)th term*d

20th term=$34000+(20-1)*$3500

  • =$100500

<u>Lillian make </u><u>$100500</u><u>in her 20th year working at this job</u><u>.</u>

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Based on a​ survey, when 1009 consumers were asked if they are comfortable with drones delivering their​ purchases, 42% said yes
Darina [25.2K]

Answer:

B.The probability 0+ indicates that the probability is a very small positive value. It indicates that the event is​ possible, but very unlikely.

Step-by-step explanation:

Out of 1009 consumers a sample of 30 consumers is selected and asked the questions. So, the sample size is 30.

n = 30

Based on previous survey, 42% are comfortable with the drone. So in this sample, we can consider the probability of success to be 42%.

p = 42% = 0.42

q = 1 - p = 1 - 0.42 = 0.58

We want to find the probability of getting exactly 24 consumers who are comfortable with drones.

x = 24

Since, the sample size is fixed, the selections are independent and probability of success is constant, we can use the Binomial Probability to answer this problem. All the conditions of a Binomial Distribution are being satisfied.

According to the formula of Binomial Distribution, the probability of getting exactly x success among n trials is given as:

P( X = x )=^{n}C_{x}(p)^{x}(q)^{n-x}

Using the values, we get:

P(X = 24) =^{30}C_{24}(0.42)^{24}(0.58)^{6}= 0.00002

Thus, the probability of getting exactly 24 consumers from a sample of 30 who are comfortable with drones is 0.00002, which is extremely small.

Since, the value of probability is a very small positive number, it indicates that event is possible but very unlikely. An impossible event has probability equal to 0.

Therefore, option B gives the correct answer.

6 0
3 years ago
Order of operations 5-2(5-27)+5
Artist 52 [7]

<em>The answer to your question would be 54</em>

<em />

<em>Work Shown:</em>

<em />

<em>5-2(5-27+5</em>

<em>Calculate with parenthesis (5-27): -22</em>

<em>5-2(-22)+5</em>

<em>Multiply and divide (left to right) 2(-22): -44</em>

<em>5-(-44)+5</em>

<em>Add and subtract (left to right) 5-(-44)+5</em>

<em>54</em>

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Answer:

Step-by-step explanation:

r²+8r=−7

Step 1: Subtract -7 from both sides.

r²+8r−(−7)=−7−(−7)

r²+8r+7=0

Step 2: Use quadratic formula with a=1, b=8, c=7.

r=r=\frac{-b+or-\sqrt{-4ac}  }{2a}

r=\frac{-8+or-\sqrt{(8})^2-4(1)(7) }{2(1)}

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