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3 years ago

5(3−x)>−2x+6 PLS ANSWER ASAP WILL GIVE BRAINLIEST

Mathematics

2 answers:

rusak2 [61]3 years ago

8 0

Answer:

x<3

Step-by-step explanation:

5(3-x)>-2x+6

15-5x>-2x+6

-5x>-2x-9

-3x>-9

x<3

Hope this helps

mars1129 [50]3 years ago

4 0

Step-by-step explanation:

plz mark me brainliest......

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3 years ago

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A manufacturer of electronic kits has found that the mean time required for novices to assemble its new circuit tester is 3 hour

vitfil [10]

Testing the hypothesis using the z-distribution, it is found that since the p-value of the test is of 0.0262 < 0.05, it can be concluded that the new booklet is effective.

At the null hypothesis, we test if there has been no improvement, that is, the time is still of 3 hours. Hence:

$H_0: \mu = 3$

At the alternative hypothesis, we test if there has been improvement, that is, the time is of less than 3 hours. Thus:

$H_1: \mu < 3$

We have the standard deviation for the population, thus, the z-distribution is used. The test statistic is given by:

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

The parameters are:

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

In this problem, the values of the parameters are: $\mu = 3, \sigma = 0.2, \overline{x} = 2.9, n = 15$ .

Then, the value of the test statistic is:

$z = \frac{2.9 - 3}{\frac{0.2}{\sqrt{15}}}$

$z = -1.94$

The p-value of the test is the probability of finding a sample mean of 2.9 hours or less, which is the p-value of z = -1.94.

Looking at the z-table, z = -1.94 has a p-value of 0.0262.

Since the p-value of the test is of 0.0262 < 0.05, it can be concluded that the new booklet is effective.

A similar problem is given at brainly.com/question/25413422

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3 years ago

2. Use the information in the table to find the cost of a pizza with 6 toppings.

evablogger [386]

Answer:

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3 years ago

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Alexeev081 [22]

Answer:

No.

Step-by-step explanation:

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$\displaystyle \large{( \frac{a}{b}) ^{m} = \frac{ {a}^{m} }{ {b}^{m} } }$

Therefore:-

$\displaystyle \large{( \frac{a}{4} )^{5} = \frac{ {a}^{5} }{ {4}^{5} } }$

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3 years ago

Help pls quick will give brainlist also show work if needed

MArishka [77]

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3 years ago