Which of the following represents the solution set to the equation: x2 + 2x + 26 = 0?

Mathematics

1 answer:

il63 [147K]2 years ago

7 0

Answer:

i think the answer is 4

Step-by-step explanation:

hope it's correct

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A survey of 1010 college seniors working towards an undergraduate degree was conducted. each student was asked, "are you plannin

Yuliya22 [10]

The confidence interval is (0.616, 0.686).

To find the confidence interval, we first find p, the proportion of students:
658/1010 = 0.6515

The confidence interval follows the formula
$p\pm z(\sqrt{\frac{p(1-p)}{N}})$

To find the z-score associated with this level of confidence:
Convert 98% to a decimal: 98% = 98/100 = 0.98
Subtract from 1: 1-0.98 = 0.02
Divide by 2: 0.02/2 = 0.01
Subtract from 1: 1-0.01 = 0.99

Using a z-table (http://www.z-table.com) we see that this is closer to the z-score 2.33.

Using our information, we have:
$0.6515\pm 2.33(\sqrt{\frac{0.6515(1-0.6515)}{1010}})
\\
\\0.6515\pm 0.0349$

This gives us the interval (0.6515-0.0349, 0.6515+0.0349) or (0.616, 0.686).

5 0

3 years ago

45 23 +(− 45 23 )

olya-2409 [2.1K]

4523 + (-4523)

4523 - 4523

0

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3 years ago

You have 6 equal parts shade in 2 thirds

Helga [31]

2/3 of 6 parts would be:
2/3=x/6
X=4
So shade 4 of the 6 parts.

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4 years ago

A produce store sold 45 red apples. If the ratio of red apples to green apples sold was 5 : 2, what is the combined amount of re

lisabon 2012 [21]

The ratio of Red Apples to Green Apples is 5:2. The proportion of red apple is 5/7.

The store sold 45 red apples.

So the combined amount of red and green apples sold = No of red apples sold divided by the proportion of red apples = 45/ (5/7) = 63

The combined amount of red and green apples sold is 63 apples.

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4 years ago

At the end of a Pizza party 1/3 of a cheese pizza and 1/6 of a pepperoni pizza or left brand ate 1/2 of all the leftover pizza w

Zina [86]

Answer:

1/6

Step-by-step explanation:

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3 years ago