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Oliga [24]
3 years ago
12

Whats the answer to x+4=-x-4

Mathematics
1 answer:
alukav5142 [94]3 years ago
8 0

Whats the answer to x+4=-x-4


x+4=(-x)-4


Answer -

Let's solve your equation step-by-step.

x+4=−x−4

Step 1: Add x to both sides.

x+4+x=−x−4+x

2x+4=−4

Step 2: Subtract 4 from both sides.

2x+4−4=−4−4

2x=−8

Step 3: Divide both sides by 2.

2x/2 =

−8/2 =

x=−4

Answer:

x=−4

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2 years ago
An automotive manufacturer wants to know the proportion of new car buyers who prefer foreign cars over domestic. Step 2 of 2 : S
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Answer:

The 85% onfidence interval for the population proportion of new car buyers who prefer foreign cars over domestic cars is (0.151, 0.205).

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}.

For this problem, we have that:

Sample of 421 new car buyers, 75 preferred foreign cars. So n = 421, \pi = \frac{75}{421} = 0.178

85% confidence level

So \alpha = 0.15, z is the value of Z that has a pvalue of 1 - \frac{0.15}{2} = 0.925, so Z = 1.44.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.178 - 1.44\sqrt{\frac{0.178*0.822}{421}} = 0.151

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.178 + 1.44\sqrt{\frac{0.178*0.822}{421}} = 0.205

The 85% onfidence interval for the population proportion of new car buyers who prefer foreign cars over domestic cars is (0.151, 0.205).

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2 years ago
A < 1.5 how would i graph that on a numberline? Graph the inequality.
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