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alexdok [17]
3 years ago
13

Choose the inequality that represents the following graph.

Mathematics
1 answer:
Artemon [7]3 years ago
4 0

Answer:

x ≤ -4

Step-by-step explanation:

There is a closed circle at -4, which requires and equals sign

The line goes to the left, which is less than

x ≤ -4

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nata0808 [166]

Answer: The point estimate of the population mean is <u>23</u>. The margin of error for the confidence interval is <u>2</u>.

Step-by-step explanation:

The confidence interval for the mean is of the form is given by :-

\overline{x}-\text{error}\leq\mu\leq\overline{x}+\text{error}

Given : Lower bound: \overline{x}-\text{error}=21​

Upper bound :\overline{x}+\text{error}= 25

Then ,the sum of lower and upper bound will be :-

2\overline{x}=21+25=46\\\\\Rightarrow\ \overline{x}=23

Since \overline{x}-\text{error}=21​

\Rightarrow\ \text{Error}=\overline{x}-21=23-21=2

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Anastasy [175]

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3 years ago
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Naddika [18.5K]
The correct question is
Using the graph of f(x) = log2x below, approximate the value of y in the equation 2^(2y) = 5

we have 
2^(2y) = 5--------------> applying base 2 logarithm both members
2y*log2(2)=log2(5)
log2(2)=1
then
2y=log2(5)
y=[log2(5)]/2

using the graph
for  x=5  the approximate  value of log2(5) is 2.3
see the attached figure
so
y=[log2(5)]/2--------> y=[2.3]/2----------> y=1.15

the answer is
the approximate value of y is 1.15

4 0
3 years ago
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