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3 years ago

Use an exponential inequality to determine the number of years, t, after which the area covered by purple loosestrife will

Mathematics

1 answer:

trasher [3.6K]3 years ago

7 0

Answer: t>3

Step-by-step explanation:

PLATO

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Ax+b=c for x how do I solve this can someone help explain it to me.

Dmitry [639]

Answer:

x= c - b / A

please look at the step by step explanation to better understand :)

Step-by-step explanation:

subtract b from the left side and right side

so you are left with Ax = c - b

divide what number c - b is by A

and you are left with x= c - b / A

5 0

4 years ago

Find the minimum sample size necessary to be 99% confident that the population mean is within 3 units of the sample mean given t

SVEN [57.7K]

Answer:

The minimum sample size required is 207.

Step-by-step explanation:

The (1 - α) % confidence interval for population mean μ is:

$CI=\bar x\pm z_{\alpha /2}\frac{\sigma}{\sqrt{n}}$

The margin of error of this confidence interval is:

$MOE=z_{\alpha /2}\frac{\sigma}{\sqrt{n}}$

Given:

$MOE=3\\\sigma=29\\z_{\alpha /2}=z_{0.01/2}=z_{0.05}=2.576$

*Use a z-table for the critical value.

Compute the value of n as follows:

$MOE=z_{\alpha /2}\frac{\sigma}{\sqrt{n}}\\3=2.576\times \frac{29}{\sqrt{n}} \\n=[\frac{2.576\times29}{3} ]^{2}\\=206.69\\\approx207$

Thus, the minimum sample size required is 207.

3 0

3 years ago

What is the first step when rewriting y = 6x2 18x 14 in the form y = a(x – h)2 k?

Anastasy [175]

Answer is

y -14= 6x^2 + 18x

4 0

2 years ago

Geometry...................

m_a_m_a [10]

Answer:

The answer to your question is below

Step-by-step explanation:

Data

Number of employees = 192

See the table

Process

a) To solve this question, consider only the employees that prefer a jacket

Male 77

Female +35

112 employees prefer a jacket

- Calculate the probability

P = 112 / 192

P = 0.58

b) Female and prefers a jacket

P = (54 /192)(35/192)

P = (0.28)(0.18)

P = 0.05

8 0

3 years ago

Factor the quadratic expression

Ber [7]

(x - 6)(x - 2) the answer to the question

3 0

4 years ago