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Blizzard [7]
3 years ago
10

Help me with this one please.

Mathematics
1 answer:
kvasek [131]3 years ago
8 0
I think you need to figure it out to 3. if you dont it wont make sense until you figure it out. maybe do what you know. you are given the first two answers. then you figure out how to prove it.
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A tree cast a shadow 21 meters long
Delicious77 [7]

Step-by-step explanation:

I do not understand .____.

5 0
2 years ago
Rewrite the set P by listing its elements p={z|z is an integer 2≤z<5}
leva [86]
Given that z is an integer, equal or greater than 2 and not equal to 5.

P = {2, 3, 4}
7 0
3 years ago
If the inspection division of a county weights and measures department wants to estimate the mean amount of
Amanda [17]

If inspection department wants to estimate the mean amount with 95% confidence level with standard deviation 0.05 then it needed a sample size of 97.

Given 95% confidence level, standard deviation=0.05.

We know that margin of error is the range of values below and above the sample statistic in a confidence interval.

We assume that the values follow normal distribution. Normal distribution is a probability that is symmetric about the mean showing the data  near the mean are more frequent in occurence than data far from mean.

We know that margin of error for a confidence interval is given by:

Me=z/2* ST/\sqrt{N}

α=1-0.95=0.05

α/2=0.025

z with α/2=1.96 (using normal distribution table)

Solving for n using formula of margin of error.

n=(z/2ST/Me)^{2}

n=(1.96*0.05)^{2} /(0.01)^{2}

=96.4

By rounding off we will get 97.

Hence the sample size required will be 97.

Learn more about standard deviation at brainly.com/question/475676

#SPJ4

The given question is incomplete and the full question is as under:

If the inspection division of a county weights and measures department wants to estimate the mean amount of soft drink fill in 2 liters bottles to within (0.01 liter with 95% confidence and also assumes that standard deviation is 0.05 liter. What is the sample size needed?

7 0
2 years ago
What is the exact value of arcsin(−2√2)
Svetach [21]

Answer:

π4;3π4

Step-by-step explanation: Trig table gives:

sinx=√22 --> arc x=π4

Unit circle gives another arc x that has the same sin value:

x=π−π4=3π4


3 0
3 years ago
A square has sides of length s. a rectangle is 6 inches shorter and 1 inch longer.Which of the following expressions represents
MAVERICK [17]
The answer is s^2 - 5s +6. 
:) Have A Nice Day!!! :) 
PLEASE PICK ME FOR THE BRAINIEST ANSWER/CROWN!!! :) :) :)))) :D
7 0
3 years ago
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