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Irina-Kira [14]
2 years ago
6

REWARDING BRAINLY TO CORRECT ANSWER

Mathematics
2 answers:
Andreyy892 years ago
8 0

Answer:

the range is 24

Step-by-step explanation:

subtract take 7 from 31

Kruka [31]2 years ago
8 0

Answer:

the range is 24

Step-by-step explanation:

subtract take 7 from 31

You might be interested in
the water works commission needs to know the mean household usage of water by the residents of a small town in gallons per day.
marin [14]

To determine the average water use, 109 people must be sampled.

1.9 gallons is the standard deviation.

E = 0.15 gallons maximum error

1.9 gallons on average

90% is the critical value.

1.645 is the 90% confidence interval.

sample size requirement,

n = (((z ÷ 2) × σ) ÷ E)²

n = (((1.645 ÷ 2) × 1.9) ÷ 0.15)²

n = ((0.8225 × 1.9) ÷ 0.15)²

n = (1.5627 ÷ 0.15)²

n = (10.418)²

n = 108.53 ≈ 109

As a result, the minimal sample size necessary to determine the mean water use = 109.

It is determined by dividing the average standard error by the squared of the sample size, and it decreases with increasing sample size. In other words, when the sample size is sufficiently big, the population mean approaches the population mean.

To learn more about the sample interval at

brainly.com/question/13664567?referrer=searchResults

#SPJ4

8 0
1 year ago
SOMEBODY PLSSSSSSS HELP!! :(
Lelechka [254]

Answer:

What's your question?

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
I HAVE ASKED THIS THREE TIMES. PLEASE ANSWER <3
Andru [333]

Answer:

Step-by-step explanation:

For Question 3, we are simply taking an input for the function, as a value of x and solving the equation. For part a, we substitute 3/14 into the first function, and solve it:

f(x) = 7(3/14) + 2

f(x) = 21/14 + 2

f(x) = 49/14

f(x) = 7/2

For part b, we take the input of -3 into the second function and solve the equation:

h(x) = 4(-3)^2

h(x) = 4(9)

h(x) = 36

For Question 4, we are simply solving this equation by isolating the x variable. First, we simplify the equation to 4-5x+15+2x = -2 and simplify this again to -3x+19 = -2. Now, we can subtract 19 from both sides of the equation to get -3x = -21. Lastly, we isolate the x variable by dividing both sides of this equation by -3, to get x = 7.

8 0
2 years ago
Read 2 more answers
5. Five-eighth of a number is 15. What is the number?<br> Your answer
anygoal [31]

Answer:

I think it is 24

Step-by-step explanation:

15÷5=3

3×8=24

6 0
2 years ago
Read 2 more answers
Will mark as brainliest if correct
Dvinal [7]
5= 7 ^x
X=ln5/ln7
X=0.827
5 0
3 years ago
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