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siniylev [52]
3 years ago
9

Tanya is training a turtle for a turtle race. For every of an hour that the turtle is crawling, he can travel of a mile. At what

unit rate is the turtle crawling?
Mathematics
1 answer:
Daniel [21]3 years ago
5 0
1 Mile per hour because 1 mile for every hour<span />
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784.5, 78.45, 7.845 find the next two numbers
BARSIC [14]
0.7845 and 0.07845 because you keep moving the decimal to the left.
4 0
3 years ago
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A chemical equation contains 4 hydrogen atoms and 2 oxygen atoms in the reactants. How many hydrogen and oxygen atoms should be
Fittoniya [83]

The number of hydrogen and oxygen atoms that should be in the products according to the law of conservation of matter, is given as follows:

4 hydrogen atoms and 2 oxygen atoms.

<h3>What is stated by the law of conservation of matter?</h3>


The law of conservation of matter states that the amount of matter in the solution remains constant, even when the substance has a change in the format.

The amounts on the equation are given as follows:

  • 4 hydrogen atoms.
  • 2 oxygen atoms in the reactants.

The law of conservation of matter states that the amounts remain constant, hence the amounts of the solution are given as follows:

  • 4 hydrogen atoms.
  • 2 oxygen atoms in the reactants.

More can be learned about the law of conservation of matter at brainly.com/question/18318085

#SPJ1

5 0
1 year ago
What is the next letter? B A D E H G J K
Sophie [7]
It should be N

working attached

8 0
3 years ago
Translate this sentence into an equation.
olga2289 [7]

Answer:

54=12+r

Step-by-step explanation:

'Sum' means to add.

3 0
1 year ago
Read 2 more answers
The CEO of a large manufacturing company is curious if there is a difference in productivity level of her warehouse employees ba
blsea [12.9K]

Answer:

The test statistic is z = -2.11.

Step-by-step explanation:

Before finding the test statistic, we need to understand the central limit theorem and subtraction of normal variables.

Central Limit Theorem

The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

Subtraction between normal variables:

When two normal variables are subtracted, the mean is the difference of the means, while the standard deviation is the square root of the sum of the variances.

Group 1: Sample of 35, mean of 1276, standard deviation of 347.

This means that:

\mu_1 = 1276, s_1 = \frac{347}{\sqrt{35}} = 58.6537

Group 2: Sample of 35, mean of 1439, standard deviation of 298.

This means that:

\mu_2 = 1439, s_2 = \frac{298}{\sqrt{35}} = 50.3712

Test if there is a difference in productivity level.

At the null hypothesis, we test that there is no difference, that is, the subtraction is 0. So

H_0: \mu_1 - \mu_2 = 0

At the alternate hypothesis, we test that there is difference, that is, the subtraction is different of 0. So

H_1: \mu_1 - \mu_2 \neq 0

The test statistic is:

z = \frac{X - \mu}{s}

In which X is the sample mean, \mu is the value tested at the null hypothesis and s is the standard error.

0 is tested at the null hypothesis:

This means that \mu = 0

From the two samples:

X = \mu_1 - \mu_2 = 1276 - 1439 = -163

s = \sqrt{s_1^2+s_2^2} = \sqrt{58.6537^2+50.3712^2} = 77.3144

Test statistic:

z = \frac{X - \mu}{s}

z = \frac{-163 - 0}{77.3144}

z = -2.11

The test statistic is z = -2.11.

7 0
3 years ago
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