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Ronch [10]
3 years ago
10

Find all zeros x^3-x^2-x+1=0

Mathematics
1 answer:
densk [106]3 years ago
3 0
I think there is only one 0. If x=2, then 3 does not equal 0.
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1,868 to the nearest hundred
Citrus2011 [14]

Answer: 1,900

Step-by-step explanation:

You would round up to 1,900 because in the tens place is a 6 and when you have a number greater than or equal to 5 you round up. Hope this helps!

7 0
2 years ago
Evaluate the expression when x=20 and y=4.
klio [65]

Answer:

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Step-by-step explanation:

3 0
2 years ago
A manufacturer of potato chips would like to know whether its bag filling machine works correctly at the 434 gram setting. It is
yan [13]

Answer:

No, there is not sufficient evidence to support the claim that the bags are underfilled

Step-by-step explanation:

A manufacturer of potato chips would like to know whether its bag filling machine works correctly at the 434 gram setting.

This means that the null hypothesis is:

H_{0}: \mu = 434

It is believed that the machine is underfilling the bags.

This means that the alternate hypothesis is:

H_{a}: \mu < 434

The test statistic is:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, \sigma is the standard deviation and n is the size of the sample.

434 is tested at the null hypothesis:

This means that \mu = 434

A 9 bag sample had a mean of 431 grams with a variance of 144.

This means that X = 431, n = 9, \sigma = \sqrt{144} = 12

Value of the test-statistic:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

z = \frac{431 - 434}{\frac{12}{\sqrt{9}}}

z = -0.75

P-value of the test:

The pvalue of the test is the pvalue of z = -0.75, which is 0.2266

0.2266 > 0.01, which means that there is not sufficient evidence to support the claim that the bags are underfilled.

7 0
2 years ago
How many choices of 3 hamburger toppings are possible?
alukav5142 [94]
There is 21 possible toppings for 3 hamburgers
7 0
3 years ago
Read 2 more answers
4.) Order the following decimals from greatest to least.<br> 15.9<br> 9.5<br> 1.95<br> 9.15<br> 1.59
olya-2409 [2.1K]
1.59, 1.95, 9.15, 9.5, 15.9
3 0
3 years ago
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