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2 years ago

Help me please help I will give you 13 point because this is due help me please

Mathematics

2 answers:

kakasveta [241]2 years ago

8 0

Answer:

Step-by-step explanation:

Zigmanuir [339]2 years ago

4 0

Answer:

Expression 1: 16÷8 has the greatest value.

Step-by-step explanation:

16÷8 =2

whereas,

0.16÷8= 0.02

1.6÷8= 0.2

0.16÷0.8= 0.2

You might be interested in

Which best expression is the best estimate of the product of 7/8 and 8 1/10

Mars2501 [29]

Answer:

D. 1x8

Step-by-step explanation:

7/8 rounded is 1. And 8 and 1/10 rounder is 8, so therefore your answer is 1x8.

hope this helps! :)

7 0

3 years ago

Which of the statements are true about the function f given by f(x) = 100-e? Select all that apply.

tatiyna

From the above function, it is clear that the value of f is never 0. Hence the statement that is true is (Option E), See explanation of same below.

<h3>What is the explanation for the above function?</h3>

Note that the function is related to Euler's number which is depicted as:
e ≈ 2.7182. The function is given as:

f(x) = 100 * $e^{-x}$

Assuming x = -2, we'd have:

100 * 2.7182 $^{-2}$

= 271.82 $^{-2}$

= 0.00001353354

Hence, even when x tends < 0 the function f(x) thus, is never 0. See the attached graph for confirmation.

Learn more about functions at:

brainly.com/question/25638609

#SPJ1

6 0

2 years ago

A quality control expert at LIFE batteries wants to test their new batteries. The design engineer claims they have a variance of

iris [78.8K]

Answer:

The probability that the mean battery life would be greater than 533.2 minutes (in a sample of 75 batteries) is $\\ P(z>0.48) = P(x>533.2) = 0.3156$

Step-by-step explanation:

The main thing we have to take into account in this question is that we are about to find the probability of a sample mean. The distribution for sample means follows a normal distribution with mean $\\ \mu$ and standard deviation $\\ \frac{\sigma}{\sqrt{n}}$ . Mathematically

$\\ \overline{x} \sim N(\mu, \frac{\sigma}{\sqrt{n}})$

For values of the sample $\\ n \ge 30$ , no matter the distribution the data come from.

And the variable z follows a standard normal distribution, and, as we can remember, this distribution has a mean = 0 and a standard deviation = 1. Mathematically

$\\ z = \frac{\overline{x} - \mu}{\frac{\sigma}{\sqrt{n}}}$ [1]

That is

$\\ z \sim N(0, 1)$

We have a variance of 3364. That is, a standard deviation of

$\\ \sigma^2 = 3364; \sigma = \sqrt{3364} = 58$

The population mean is

$\\ \mu = 530$

The sample size is $\\ n = 75$

The sample mean is $\\ \overline{x} = 533.2$

With all this information, we can solve the question

The probability that the mean battery life would be greater than 533.2 minutes

Using equation [1]

$\\ z = \frac{\overline{x} - \mu}{\frac{\sigma}{\sqrt{n}}}$

$\\ z = \frac{533.2 - 530}{\frac{58}{\sqrt{75}}}$

$\\ z = \frac{3.2}{\frac{58}{8.66025}}$

$\\ z = \frac{3.2}{6.69726}$

$\\ z = 0.47780$

With this value of z we can consult a cumulative standard normal table (or use some statistic program) to find the cumulative probability for z (and remember that this variable follows a standard normal distribution).

Most standard normal tables have values for z for only two decimals, so we can round the previous value for z as z = 0.48.

Then

$\\ P(z$

However, in the question we are asked for $\\ P(z>0.48) = P(x>533.2)$ . As well as all normal distributions, the standard normal distribution is symmetrical around the mean, and we have

$\\ P(z>0.48) = 1 - P(z$

Thus

$\\ P(z>0.48) = 1 - 0.68439$

$\\ P(z>0.48) = 0.31561$

Rounding to four decimal places, we have

$\\ P(z>0.48) = 0.3156$

So, the probability that the mean battery life would be greater than 533.2 minutes is (in a sample of 75 batteries) $\\ P(z>0.48) = P(x>533.2) = 0.3156$ .

5 0

3 years ago

Employer A is offering you a position for $350000 per year l. Employer B is offering the same job for $18.00 per hour. Assuming

ss7ja [257]

Answer:

Depends

Step-by-step explanation:

In order to see which annual salary is higher, we must calculate the annual salary of B to compare to A. To do this, if B offers $18.00 an hour for 40 hours a week, that's $720 a week. Now to convert this to annual, multiply the weekly earnings by the 52 weeks in a year. Employer B offers $720 × 52 weeks = $37,440 annually. Assuming you didn't have a typo, $350,000 is $312,560 greater meaning A pays more. If you did have a typo, and meant that Employer A offered $35,000, then Employer B would pay more.

5 0

3 years ago

What is the product in simplest form? −611⋅34

Anton [14]

Correct Question:

What is the product in simplest form?

$-\frac{6}{11} \times \frac{3}{4}$

Answer:

$-\frac{9}{22}$ is the product in simplest form

Step-by-step explanation:

We can find the simplest form of solving two fractions. So, to make the fractions multiplication simple, multiply two fractions in the numerator and divide it by the denominators of the two fractions. In the given case,

$-\frac{6}{11} \times \frac{3}{4}$

To simplify, multiply both 6 and 3 in numerator and multiply 11 and 4 in denominator of two fractions. So, we get

$-\frac{18}{44}$

To simplify the above, divide 18 and 44 by their greatest common factor, which is 2. By doing this, we get

$-\frac{9}{22}$

8 0

3 years ago