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Furkat [3]
2 years ago
7

Shannon set her watch 3 seconds behind, and it falls behind another 2 seconds everyday. How many days has it been since Shannon

last set her watch if the watch is 67 seconds behind
Mathematics
1 answer:
GrogVix [38]2 years ago
8 0
The answer is 32 all you have to do to get you answer is add 3 and 2 which gives you 5 and you add it up until you get to 67 and you have to see how many times you add it up to get the answer which is 3 or a shorter way is 31 times 2 plus 5 and it gives you 67
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Which net matches the solid figure shown below?
gayaneshka [121]

Answer:

the answer is A

Step-by-step explanation:

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7 0
3 years ago
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A survey was conducted that asked 1003 people how many books they had read in the past year. Results indicated that x overbar eq
Sergio [31]

Answer:

The 99% confidence interval would be given (11.448;14.152).

Step-by-step explanation:

1) Important concepts and notation

A confidence interval for a mean "gives us a range of plausible values for the population mean. If a confidence interval does not include a particular value, we can say that it is not likely that the particular value is the true population mean"

s=16.6 represent the sample deviation

\bar X=12.8 represent the sample mean

n =1003 is the sample size selected

Confidence =99% or 0.99

\alpha=1-0.99=0.01 represent the significance level.

2) Solution to the problem

The confidence interval for the mean would be given by this formula

\bar X \pm z_{\alpha/2} \frac{s}{\sqrt{n}}

We can use a z quantile instead of t since the sample size is large enough.

For the 99% confidence interval the value of \alpha=1-0.99=0.01 and \alpha/2=0.005, with that value we can find the quantile required for the interval in the normal standard distribution.

z_{\alpha/2}=2.58

And replacing into the confidence interval formula we got:

12.8 - 2.58 \frac{16.6}{\sqrt{1003}}=11.448

12.8 + 2.58 \frac{16.6}{\sqrt{1003}} =14.152

And the 99% confidence interval would be given (11.448;14.152).

We are confident that about 11 to 14 are the number of books that the people had read on the last year on average, at 1% of significance.

3 0
3 years ago
PLZ HELP WILL GIVE BRAINLIEST!!!!!!
Travka [436]
We should find the mean number of the tests. 
This would be done like: (23+24+25)/3  = 24

After that, you should find the percentage or fraction like this 24/50
Then use the fraction as an estimate like this:

(24/50) * 3250 = 1560

The correct answer is 1560.
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3 years ago
If a ray QR bisects
Feliz [49]

Answer:

I guess I was help full for u

plz follow me for more update

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3 years ago
What is the area?? How do I find it?
Alika [10]

Answer:

73.5

Step-by-step explanation:

A=bh

10.5*7

    73.5

6 0
3 years ago
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