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Fittoniya [83]
3 years ago
5

Replace the exponent with a product and then transform the product into a polynomial. (x+10)^2

Mathematics
1 answer:
kupik [55]3 years ago
4 0

Answer:

x^2 +20x+100

Step-by-step explanation:

(x+10)^2

(x+10) (x+10)

FOIL

first:x*x = x^2

outer: x*10

Inner 10*x

last: 10*10 =100

Add them together

x^2+10x+10x+100

x^2 +20x+100

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Agata [3.3K]

Given:

Sample mean = 65.4

Standard deviation = 1.2

Sample size = 45

Confidence level = 99%

To find:

The confidence interval.

Solution:

The formula for confidence interval is

CI=\overline{x}\pm z^*\dfrac{s}{\sqrt{n}}

where, \overline{x} is sample mean, z* is confidence value, s is standard deviation and n is sample size.

Confidence value or z-value at 99% = 2.58

Putting the given in the above formula, we get

CI=65.4\pm 2.58\times \dfrac{1.2}{\sqrt{45}}

CI=65.4\pm 0.46

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2 years ago
How do you do this question
ella [17]

Answer:


Step-by-step explanation:


5 0
3 years ago
An airplane pilot over the Pacific sights an atoll at an angle of depression of 5 . At this time, the horizontal distance from t
Aleonysh [2.5K]

Answer:

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Step-by-step explanation:

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So, the height of the plane is 404.98 m.

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in an ordered pair,the x-coordinate represents the number of hexagons and the y-coordinate represents the total number of sides.
AysviL [449]
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