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2 years ago

Please help. Click to view picture. Algebra question. HELP ME PLEASE ASAP

Mathematics

1 answer:

faltersainse [42]2 years ago

5 0

First you know you'll divide by -2, so the sign will be flipped.
That eliminates the first and second options, then you'll just have to do math.

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Fanning + medal

lubasha [3.4K]

The Greatest Common Factor of the given expression should be that expression that can divide both. First, factor both expression,
x^4 = (x³)(x) and x³ = (x³)(1)
Therefore, both can be factored by x³. The answer is the third choice.

7 0

2 years ago

Read 2 more answers

In a sample of 70 stores of a certain company, 62 violated a scanner accuracy standard. It has been demonstrated that the condi

uysha [10]

Answer:

We need at least 243 stores.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

The margin of error of the interval is:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

For this problem, we have that:

$n = 70, p = \frac{62}{70} = 0.886$

95% confidence level

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

Determine the number of stores that must be sampled in order to estimate the true proportion to within 0.04 with 95% confidence using the large-sample method.

We need at least n stores.

n is found when M = 0.04. So

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$0.04 = 1.96\sqrt{\frac{0.886*0.114}}{n}}$

$0.04\sqrt{n} = 1.96\sqrt{0.886*0.114}$

$\sqrt{n} = \frac{1.96\sqrt{0.886*0.114}}{0.04}$

$(\sqrt{n})^{2} = (\frac{1.96\sqrt{0.886*0.114}}{0.04})^{2}$

$n = 242.5$

Rounding up

We need at least 243 stores.

5 0

2 years ago

What is the answer to 16.3-2.666

djverab [1.8K]

The answer: <span>13.634

Don't believe me? Check with a(n) calculator!</span>

4 0

3 years ago

Find the value of x. Round your answer to the nearest tenth. tan 12 degrees= ten over (x)

Lorico [155]

Tan(12)=-0.6358599287. That means -0.6358599287 = 10/x so you can swap the x to the other side to make x = 10/-0.6358599287 Which equals -15.7 rounded to the nearest tenth.

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2 years ago

Read 2 more answers

Layne uses software to graph f(x)=3x+2. Then she changes it to f(x)=3x-2 and uses the software to graph the new function.which o

Vanyuwa [196]

Answer:

B, the y-intercept

Step-by-step explanation:

The y-intercept will change but all else will stay the same.

When you shift a function up and down, the y-intercept will change.

8 0

3 years ago