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Anettt [7]
2 years ago
11

16) The zero of a polynomial ax+b (a is not zero) isa/bb/a-a/b-b/a​

Mathematics
1 answer:
Andreas93 [3]2 years ago
4 0

Answer:

x = - \frac{b}{a} ( a ≠ 0 )

Step-by-step explanation:

To find the zero, let the polynomial equal zero, that is

ax + b = 0 ( subtract b from both sides )

ax = - b ( divide both sides by a )

x = - \frac{b}{a}

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In order to estimate the average electric usage per month, a sample of 81 houses was selected and the electric usage was determi
lana [24]

Answer:

Confidence interval:  (1760,1956)

Step-by-step explanation:

We are given the following information in the question:

Sample size, n = 81

Sample mean =

\bar{x} = 1858 \text{ kWh}

Population standard deviation =

\sigma = 450 \text{ kilowatt-hours}

Confidence Level = 95%

Significance level = 5% = 0.05

Confidence interval:

\bar{x} \pm z_{critical}\displaystyle\frac{\sigma}{\sqrt{n}}

Putting the values, we get,

z_{critical}\text{ at}~\alpha_{0.05} = \pm 1.96

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6 0
3 years ago
5/6 times 1/3. dived by 2/3 divided 1/2
mrs_skeptik [129]

Answer:

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Step-by-step explanation:

5/6 * 1/3 = 5/18

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5/12 / 1/2 = 5/6

8 0
3 years ago
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Here are five number cards . 2,5,7,8,9 . One of the cards is removed and the mean average of the remaining four number cards is
Elodia [21]

Answer:

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Step-by-step explanation:

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Total of all numbers in the cards = 2+5+7+8+9= 31

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Now sum new would be =31-x   ..  i

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7 0
3 years ago
» What is the distance between -25 and -12 on<br> a number line?
solmaris [256]

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8 0
3 years ago
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