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2 years ago

QUADRATICS - 20 Points// Reported if blank answer

Mathematics

1 answer:

Anarel [89]2 years ago

8 0

Answer:

<h2> No solution</h2>

Step by Step Solution

STEP1:

Solving a Single Variable Equation:

<h3> 1.1 Solve -xb+3x+3 = 0</h3>

In this type of equations, having more than one variable (unknown), you have to specify for which variable you want the equation solved.

No solutions found

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HELP ME LLEASE WUIZ OMG WHAT ARE THE CORDS? 30 points

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Answer: -1/2 and 1/3

Step-by-step explanation:

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3 years ago

PLEASE HELP SHAWTYYY

Serjik [45]

Answer:

Vertical

x=49

Step-by-step explanation:

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3 years ago

Suppose that a recent article stated that the mean time spent in jail by a first-time convicted burglar is 2.5 years. A study wa

4vir4ik [10]

Using the z-distribution, it is found that since the test statistic is greater than the critical value, it can be concluded that the mean length of jail time has increased.

At the null hypothesis, it is tested if the mean length of jail time is still of 2.5 years, that is:

$H_0: \mu = 2.5$

At the alternative hypothesis, it is tested if it has increased, that is:

$H_1: \mu > 2.5$

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 sample.
n is the sample size.

For this problem, the values of the parameters are: $\overline{x} = 3, \mu = 2.5, \sigma = 1.5, n = 26$

Hence, the value of the test statistic is:

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

$z = \frac{3 - 2.5}{\frac{1.5}{\sqrt{26}}}$

$z = 1.7$

The critical value for a right-tailed test, as we are testing if the mean is greater than a value, with a significance level of 0.05, is of $z^{\ast} = 1.645$

Since the test statistic is greater than the critical value, it can be concluded that the mean length of jail time has increased.

A similar problem is given at brainly.com/question/24166849

5 0

2 years ago

Side BC is 4 meters long. Side CD is twice the length of the side BC. What is the length of side LM. Explain your reasoning.

Misha Larkins [42]

Answer:

LM = 18

Step-by-step explanation:

BC = 4

CD is twice that, so CD is 8

Now, remembering that the area of ABCD = 32 and JKLM = 72, divide 72 by 32.

You get 2.25. This is how much bigger JKLM is than ABCD.

Using that, multiply the length of CD (which is 8) by 2.25 to get the length of LM.

You'll get 18.

Hope this helps!

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2 years ago

Evaluate each problem below.Please show all work for full points

Fiesta28 [93]

Answer:

The answer to

1. 22/5

2. 3

Step-by-step explanation:

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3 years ago