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3 years ago

5

Describe two different cross section shapes that can be formed by slicing a cylinder. For each shape describe how the cross sect

ion was created.

1 answer:

artcher [175]3 years ago

5 0

either a rectangle or circle will be made. If you cut it horizontially you will get a circle. Vertically and you will have a rectangle

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Multiply: (3m^2n)(-2m^2n^3)

andreyandreev [35.5K]

(3m^2n) x (-6m^2n)

Answer is
-18m^4n

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3 years ago

Which is greater 1 millennium or 10 centuries?

Bingel [31]

They are both the same
1 millenium - 1000 yrs
1 century -100 yrs
100 x 10 - 1000yrs

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4 years ago

Read 2 more answers

Please help me solve this problem. Whoever answers right first will be brainliest

Phantasy [73]

Answer:

100 waffles

Step-by-step explanation:

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2 years ago

The cost and revenue functions for producing and selling x units of a product are given. Cost and revenue are expressed in dolla

KIM [24]

Answer:

Step-by-step explanation:

The cost function is expressed in dollars as

C(x) = 14980 + 20x

The revenue function is expressed in dollars as

R(x) = 30x

a) At the point of break even, the total cost equals the total revenue. There is neither profit nor loss. Therefore, the the number of units that must be produced and sold to break even would be

14980 + 20x = 30x

30x - 20x = 14980

10x = 14980

x = 1498

1498 mist be produced and sold to break even.

At this level, the dollar amount coming in and going out is

30 × 1498 = $44940

b) Profit = Revenue - cost

P(x) = R(x) - C(x)

P(x) = 30x - (14980 + 20x)

P(x) = 30x - 14980 - 20x

P(x) = 10x - 14980

4 0

4 years ago

Tumbleweed, commonly found in the western united states, is the dried structure of certain plants that are blown by the wind, ko

kramer

Since we are dealing with a proportion, it is determined by using the z-distribution that there is insufficient evidence to draw the conclusion that the proportion of all kochia plants that are resistant to glyphosate has increased because the test statistic is less than the critical value for the right-tailed test.

In this problem, we consider that:

$p_{1}$ is the proportion in 2014.

$p_{2}$ is the proportion is 2017.

<h3>What are the hypothesis tested?</h3>

At the null hypothesis, we test if there has been no increase, that is, the subtraction is of 0.

$H_{0}: p_{2}-p_{1}=0$

At the alternative hypothesis, we test if there has been an increase, hence:

$H_{1}: p_{2}-p_{1} \neq 0$

<h3>What is the distribution of the difference of sample proportions?</h3>

The proportions and standard errors are given by:

$p_{1}=0.197, s_{1}=\sqrt{\frac{0.197(0.803)}{61}}=0.0509\\p_{2}=0.385, s_{2}=\sqrt{\frac{0.385(0.615)}{52}}=0.0675$

Hence, the distribution has mean and standard error given by:

$\bar{p}=p_{2}-p_{1}=0.0675-0.0509=0.0166\\s=\sqrt{s_{1}^{2}+s_{2}^{2}}=\sqrt{0.0509^{2}+0.0675^{2}}=0.0845$

<h3>What is the test statistic?</h3>

It is given by:

$z=\frac{\bar{p}-p}{s}$

In which p = 0 is the value tested at the null hypothesis, hence:

$z=\frac{0.0166}{0.0845}\\$z=0.2$$

<h3>What is the decision?</h3>

Considering a right-tailed test, as we are testing if the proportion is greater than a value, with a significance level of 0.05, the critical value is of $z^{*}=1.645$

There is insufficient information to establish that the fraction of all kochia plants that are resistant to glyphosate has increased because the test statistic is smaller than the crucial value for the right-tailed test.

Learn More about the z-distribution here: brainly.com/question/26454209

#SPJ4

3 0

2 years ago