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Leokris [45]
3 years ago
12

X^2+2x+9=(x+1)^2+n What is n? ​

Mathematics
1 answer:
Sav [38]3 years ago
5 0

Answer:

I believe that the answer is 'n=8'.

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The most recent poll of 50 randomly-selected members of a school club with a total of 80 members showed that 38 are planning to
melisa1 [442]

Answer with Explanation:

Total number of members in School Club = 80 members

Number of member randomly Selected,that is sample size used  (P) = 50 members

Number of members who are planning to vote for Talia = 38 members

Z Score for 95% confidence interval =1.96

it is given that Margin of Error ,E,of the poll using a 95% confidence interval=12%

E=\frac{Z*\sigma}{\sqrt{P}}\\\\ \frac{12}{100}=\frac{1.96 * \sigma}{\sqrt{50}}\\\\ \sigma=4.32890

Standard Deviation=4.3 (approx)

→95% confidence level for students who are planning to vote for Talia as president of the club lie between → 38 + 4.3 = 42.3 to 38 -4.3=33.7.

→So, members which will vote for Talia as president of the club lies between minimum of 33 members and maximum of 42 members.

5 0
3 years ago
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There are 12 boys and 15 girls in your class. Four new students, 3 boys and 1 girl,join your class. Compare the ratio of boys to
UkoKoshka [18]
What I'm confused do u want us to tell u the before and after ratios or the rate of change?
7 0
3 years ago
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la razon entre los pesos de juan y su padre es 2:5, si sus pesos suman 105 kg, ¿cuanto pesa juan y cuanto pesa su papa?
Afina-wow [57]
Is Kevin Nash
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8 0
3 years ago
What is the product?<br> (3a^2b^4) (-8ab^3)
sladkih [1.3K]

Answer:

-24a^3b^7

Step-by-step explanation:

(3a^2b^4)(-8ab^3)       Original equation

-24a^3b^7                    You have to multiply the coefficients, but because of

the power rule, you have to add the exponents with each other.

Hope this helps!

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3 years ago
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A meeting lasted from 11:15 am until 1:00 pm. how long was the meeting?
Evgen [1.6K]
<span>A meeting lasted from 11:15 am until 1:00 pm. how long was the meeting?
We have 1:00 pm= 13.00
13.00-11.15= 1.45
The meeting was 1 hour and 45 minutes</span>
8 0
3 years ago
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