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LekaFEV [45]
2 years ago
9

Find zeroes of quadratic polynomial p(x) = x2 -3x - 4.​

Mathematics
1 answer:
MAVERICK [17]2 years ago
4 0

Here is ur answer

<em>-</em><em> </em><em>BRAINLIEST</em><em> answerer</em>

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At 11:30 a.m. the bottle is 1/4 of the way full. At what time will the bottle be 1/2 full?
attashe74 [19]

Answer:

12:00pm

Step-by-step explanation:

at 11am,the bottle is empty. the bottle fills in intervals of 1/4 every 30 minutes

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A rectangle has a length of 0.4m and a width of 5cm less than its length.what is the perimeter of the rectangle
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150cm

Step-by-step explanation:

0.4*100-5=35

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If angle 4 is measured to be 70 degrees, then select all of the other angles that would also be 70 degrees in the diagram shown.
m_a_m_a [10]
The answer are angles 1, 4, 5, and 8
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A diver starts at the wreck of the Varanger and then ascends 8 feet every 5 minutes. What is the diver’s depth after one hour?
Leokris [45]

Answer:

Step-by-step explanation:

60 minutes divided by 5 times 8

96 feet

6 0
2 years ago
5. A study found that the average time it took a person to find their dream home was 5.9 months. If a sample of
solong [7]

Answer:

The 95% confidence interval of the mean time it took a person to find their dream home is between 5.64 months and 6.16 months.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.95}{2} = 0.025

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.025 = 0.975, so z = 1.96

Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 1.96\frac{0.8}{\sqrt{36}} = 0.26

The lower end of the interval is the sample mean subtracted by M. So it is 5.9 - 0.26 = 5.64 months

The upper end of the interval is the sample mean added to M. So it is 5.9 + 0.26 = 6.16 months.

The 95% confidence interval of the mean time it took a person to find their dream home is between 5.64 months and 6.16 months.

4 0
3 years ago
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