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umka2103 [35]
2 years ago
8

Write a recursive formula for the sequence 2,-4,8,- 16, PLEASE HELP ASAP!!!!!!!!

Mathematics
1 answer:
Yanka [14]2 years ago
3 0

Answer:

2 \times  { (- 2)}^{n - 1}

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A housekeeper had 3/7 of a spray bottle of a cleaning solution. Used 1/9 of the solution in a day . How much of the bottle did s
olga nikolaevna [1]

Answer:

27/7 or   3   6/7

Step-by-step explanation:

3/7 divided by 1/9 = 27/7

rounded to 3

Have a nice day

4 0
3 years ago
Example 1: Calculation of Normal Probabilities Using ????????-Scores and Tables of Standard Normal Areas The U.S. Department of
Molodets [167]

Answer:

i) 0.872

ii) 0.300

iii) 0.76

iv) 0.704

Step-by-step explanation:

We are given the following information in the question:

Mean, μ =  $261.50 per month

Standard Deviation, σ = $16.25

We are given that the distribution of monthly food  cost for a 14- to 18-year-old male is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

a) P(Less than $280)

P( x < 280) = P( z < \displaystyle\frac{280 - 261.50}{16.25}) = P(z< 1.138)

Calculation the value from standard normal z table, we have,  

P(x < 280) = 0.872 = 87.2\%

b) P(More than $270)

P(x > 270)

P( x > 270) = P( z > \displaystyle\frac{270 - 261.50}{16.25}) = P(z > 0.523)

= 1 - P(z \leq 0.523)

Calculation the value from standard normal z table, we have,  

P(x > 270) = 1 - 0.700 = 0.300 = 30.0\%

c) P(More than $250)

P(x > 250)

P( x > 250) = P( z > \displaystyle\frac{250 - 261.50}{16.25}) = P(z > -0.707)

= 1 - P(z \leq -0.707)

Calculation the value from standard normal z table, we have,  

P(x > 250) = 1 - 0.240 = 0.76 = 76.0\%

d) P(Between $240 and $275)

P(240 \leq x \leq 275) = P(\displaystyle\frac{240 - 261.50}{16.25} \leq z \leq \displaystyle\frac{275-261.50}{16.25}) = P(-1.323 \leq z \leq 0.8307)\\\\= P(z \leq 0.8307) - P(z < -1.323)\\= 0.797 - 0.093 = 0.704 = 70.4\%

P(240 \leq x \leq 275) = 70.4\%

e) Thus, 0.704 is the probability  that the monthly food cost for a randomly selected 14- to 18-year-old male is between $240 and $275.

5 0
3 years ago
Get brainiest !! Easyyy question
Reika [66]

Answer:

Step-by-step explanation:

hmmm

7 0
3 years ago
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A fish tank can hold 190 liters of water. The tank has 154 liters of water in it already.
Ierofanga [76]

Answer:

it is 36 liters

Step-by-step explanation:

think of it like your subtracting 154 from 190 if you subtract 100 from 190 it will be 90 and if you subtract 50 from 90 it will be 40 so if you subtract 4 from 40 it will be 36 your answer.

8 0
2 years ago
Need help fast pls thank you
Mama L [17]

Answer:

Step-by-step explanation:

4 0
3 years ago
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