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MA_775_DIABLO [31]
2 years ago
8

Need helppppppp Factored form

Mathematics
1 answer:
olchik [2.2K]2 years ago
4 0
(x+8)(x-3) have a great day
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A tile measures 10cm by 10cm. How many such tiles are required to cover a wall of size 4m and 2.5m?
irina [24]

Answer:

Step-by-step explanation:

[4m(2.5m)(100^2cm^2/m^2)]/10^2cm^2=1000 tiles

3 0
2 years ago
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A dog will eat 4 cups of dog kibble a day. There is 100 cups of dog food in a 50lb bag. How much dog food will a dog eat in a ye
diamong [38]
4 x 365 = 1460

1460/100 =14.6

14.5 x 50 = 760lbs
5 0
2 years ago
Question 22 of 25<br> Which of the following is most likely the next step in the series?
forsale [732]

Answer:

B

Step-by-step explanation:

6 0
2 years ago
Find any real solutions for the following quadratic equations.<br><br> 2 x2 - 8 = 0 <br><br> x2 = -5
valkas [14]
Hello,
I) 2(x²-4)=0
==>(x-2)(x+2)=0
==>x=2 or x=-2

II)
No real solutions.


5 0
2 years ago
The nutrition lab in Chapter 14, exercise 38 tested 40 hot dogs to see if their mean sodium content was less than the 325-mg upp
Margaret [11]

Using the t-distribution, it is found that:

a) Since the p-value of the test is 0.15 > 0.05, there is not significant evidence to conclude that the mean weight is below 325-mg, that is, that it meets specifications.

b) Any larger sample size does not ensure that regulations are met, it has to be significantly large such that t will be less than the critical value for the test.

At the null hypothesis, we<u> test if the mean sodium content is of at least 325-mg</u>, that is:

H_0: \mu \geq 325

At the alternative hypothesis, we <u>test if it is less than 325-mg</u>, that is:

H_1: \mu < 325

Item a:

We have the <u>standard deviation for the sample</u>, thus, the t-distribution is used. The test statistic is given by:

t = \frac{\overline{x} - \mu}{\frac{s}{\sqrt{n}}}

The parameters are:

  • \overline{x} is the sample mean.
  • \mu is the value tested at the null hypothesis.
  • s is the standard deviation of the sample.
  • n is the sample size.

For this problem, the values of the <u>parameters</u> are: \overline{x} = 322, \mu = 325, s = 18, n = 40

The value of the <u>test statistic</u> is:

t = \frac{\overline{x} - \mu}{\frac{s}{\sqrt{n}}}

t = \frac{322 - 325}{\frac{18}{\sqrt{40}}}

t = -1.05

The p-value of the test is found using a left-tailed test, as we test if the mean is less than a value, with <u>t = -1.05</u> and <u>40 - 1 = 39 df</u>.

Using a t-distribution calculator, this p-value is of 0.15.

Since the p-value of the test is 0.15 > 0.05, there is not significant evidence to conclude that the mean weight is below 325-mg, that is, that it meets specifications.

Item b:

  • Increasing the sample size decreases t which also decreases the p-value in a left-tailed test.
  • However, the specifications are only met is t is lower than the critical value of t, hence, there has to be a significant increase in sample size.

Hence:

Any larger sample size does not ensure that regulations are met, it has to be significantly large such that t will be less than the critical value for the test.

A similar problem is given at brainly.com/question/25454581

3 0
2 years ago
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