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kipiarov [429]
3 years ago
12

Solve 7x + 6 < 3(x - 2).

Mathematics
1 answer:
slava [35]3 years ago
7 0
<span>7x + 6 < 3(x - 2)
7x + 6 < 3x - 6
7x - 3x < -6 - 6
4x < - 12
x < - 3

Answer is </span><span>{x | x < -3}.</span>
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If A=−2x+8 and B=2x−4, find an expression that equals 2A+B in standard form.
kirza4 [7]

Answer: -2x + 12

Step-by-step explanation:

2A + B = 2(-2x + 8) + (2x - 4) = -4x + 16 + 2x - 4 = -2x + 12

5 0
2 years ago
And this one :/ I need to find what m&lt;1=
lakkis [162]
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im pretty bad at explaining, hopefully it helps!
5 0
3 years ago
Of the population of all fruit flies we wish to give a 90% confidence interval for the fraction which possess a gene which gives
maks197457 [2]

Answer:

The margin of error for the 90% confidence interval is of 0.038.

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 is:

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

To this end we have obtained a random sample of 400 fruit flies. We find that 280 of the flies in the sample possess the gene.

This means that n = 400, \pi = \frac{280}{400} = 0.7

90% confidence level

So \alpha = 0.1, z is the value of Z that has a pvalue of 1 - \frac{0.1}{2} = 0.95, so Z = 1.645.

Give the margin of error for the 90% confidence interval.

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

M = 1.645\sqrt{\frac{0.7*0.3}{400}}

M = 0.038

The margin of error for the 90% confidence interval is of 0.038.

8 0
3 years ago
A square piece of paper has an area of 36 square inches what is the perimeter of the paper​
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Lets represent the side of the square as s , since we know the area is 36. write s

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Find the 12th term of the geometric sequence show below x^2, -2x^6, 4x^10​
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