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mars1129 [50]
3 years ago
14

N/4 < -1 on a number line -10x>-100 on a number line 5x>20 on a number line

Mathematics
1 answer:
blsea [12.9K]3 years ago
4 0
N/4 < -1 — we can multiply both sides with 4, so we dont have to deal with fractions.

N < -4

So, our N goes left from -4 on a number line.

-10x<-100 — divide both sides by 10
-x < -10
x > 10

X is from 10 rightwards.

5x>20 — divide both sides by 5
x > 4

X is rightwards from 4.


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Answer: B. 0.036

Step-by-step explanation:

Formula for standard error :

SE=\sqrt{\dfrac{p(1-p)}{n}}

, where p = Population proportion and n= sample size.

Let p be the population proportion of the people who favor new taxes.

As per given , we have

n= 170

p=\dfrac{55}{170}\approx0.324

Substitute these values in the formula, we get

SE=\sqrt{\dfrac{0.324(1-0.324)}{170}}\\\\=\sqrt{0.00129}\\\\=0.0359165699921\approx0.036

Hence, the standard error of the estimate is 0.036.

∴ The correct answer is OPTION B. 0.036

8 0
3 years ago
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Three roots of the polynomial equation x4 - 4x3 - 2x2 + 12x + 9 = 0 are 3, -1 and -1. Explain why the fourth root must be a real
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However is their is one complex root (a + i.b), it's conjugate is also
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In the equation x⁴ - 4x³ - 2x² + 12x + 9 = 0, we have already 3 roots, then the 4rth cannot be a complex one since we don't have a fifth for its conjugate.

3 0
3 years ago
-3/10x (-0.1) can you please help ASAP
Gre4nikov [31]

\frac{ - 3}{10}  \times ( - 0.1)

\frac{ - 3}{10}  \times  \frac{ - 1}{10}

<u> </u><u> </u><u> </u><u>–</u><u>3</u><u> </u><u> </u><u> </u><u>×</u><u> </u><u> </u><u> </u><u>–</u><u>4</u><u> </u><u> </u><u> </u><u> </u><u> </u>

10

\frac{12}{10}

\frac{6}{5} answer

<h3>HOPE THIS HELPS :)</h3>
8 0
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