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Vera_Pavlovna [14]
3 years ago
9

Miss Collins but two dozen rulers for $2.25 how much to each ruler cost

Mathematics
1 answer:
pychu [463]3 years ago
6 0
Each ruler would cost about 9 cents 
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A poll conducted in 2013 found that 52% of u.s. adult twitter users get at least some news on twitter.40. the standard error for
FinnZ [79.3K]
The 99% confidence interval for the population proportion is given by

sample \ proportion \pm 2.575\times standard \ error

Given that 52% = 0.52 is the standard proportion and the standard error is 2.4% = 0.024.

Therefore, the <span>99% confidence interval for the fraction of u.s. adult twitter users who get some news on twitter is given by

0.52\pm2.575\times0.024=0.52\pm0.0618=(0.4582, \ 0.5818)

</span>Therefore, the <span>99% confidence interval for the fraction of u.s. adult twitter users who get some news on twitter is 45.82% and 58.18%.

The interpretation of the confidence interval</span> is as follows: "We are 99% confident that the fraction of U.S. adult twiter users who get some news on twitter is between 45.82% and 58.18%.
3 0
4 years ago
Which of the following statements is correct? A. An increase in the price of C will decrease the demand for complementary produc
ludmilkaskok [199]

Answer:

the answer is B...

APEX!!!

Step-by-step explanation:

3 0
3 years ago
Help pls idk how to do this
8_murik_8 [283]

Answer:-y/3x to the 2nd power

Step-by-step explanation:.

7 0
3 years ago
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The sum of three numbers is 13. The sum of twice the first number, 5 times the second number, and 6 times the third number is 67
Jet001 [13]

Answer: 2,3,8

Step-by-step explanation:

if,

x+y+z=13

2x+5y+6z=67

5x-y=7

Solve [x+y+z=13 2x+5y+6z=67] to find: -3x+z=2 and keep

|

x+y+z=13

5x-y=7

6x+z=20 and -3x+z=2

z=8

x=2

y=3

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2 years ago
Please help! URGENT! will award 30 points &amp; brainliest!
Alekssandra [29.7K]

Answer:

i believe it is -21, but i'm not sure

Step-by-step explanation:

just foil the two to get a quadratic expression

4 0
3 years ago
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