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3 years ago

I need both Rn !!!! Pls help

Mathematics

1 answer:

mixas84 [53]3 years ago

3 0

The first one is:-89
Second one is:False

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Eight trials are simulated. The results are shown in the table.

bezimeni [28]

Answer:

2.897

Step-by-step explanation:

Let us find the mean and variance for the sample first.

105 104 110 112

114 106 108 109

Mean = sum/8 = 108.5

Variance = 12

Std dev = sq rt of variance = 3.464

Std error = std dev/ sq rt n

since n =8, we get std error = 1.225

Since sample size is small, df =8-1 =7

For 95% confidence intervals, t critical value for two tailed=2.365

Margin of error = std error x t critical = 1.225(2.365)

=2.897

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3 years ago

How many solutions does the following equation have 4 (3 + x) = 8 + 4x

OLga [1]

It only has one solution.

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3 years ago

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What is the correct way to write 1/4% as a decimal?

quester [9]

the correct way to $\frac{1}{4}$ as a decimal is 0.25

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3 years ago

X-2y=7 -x+3y=-4 show your work

Tom [10]

Answer:

I'm posting the pictures above!!!

Step-by-step explanation:

hoped I helped:)

6 0

3 years ago

Identify which of the following statement(s) is always true?

julia-pushkina [17]

Answer:

Statement 3

Step-by-step explanation:

Statement 1: For any positive integer n, the square root of n is irrational.

Suppose n = 25 (25 is positive integer), then

$\sqrt{n}=\sqrt{25}=5$

Since 5 is rational number, this statement is false.

Statement 2: If n is a positive integer, the square root of n is rational.

Suppose n = 8 (8 is positive integer), then

$\sqrt{n}=\sqrt{8}=2\sqrt{2}$

Since $2\sqrt{2}$ is irrational number, this statement is false.

Statement 3: If n is a positive integer, the square root of n is rational if and only if n is a perfect square.

If n is a positive integer and square root of n is rational, then n is a perfect square.

If n is a positive integer and n is a perfect square, then square root of n is a rational number.

This statement is true.

8 0

3 years ago