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2 years ago

How do you simplify without using a calculator (-5)(7)+4×5

Mathematics

1 answer:

Evgesh-ka [11]2 years ago

7 0

Answer:

-15 Is the answer

Step-by-step explanation:

(-5)(7)+4×5

= -15

(-5)(7) + 4×5 = -15/1 = -15

Multiple: -5 * 7 = -35

Multiple: 4 * 5 = 20

Add: the result of step No. 1 + the result of step No. 2 = -35 + 20 = -15

Hope this helps.

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Viktor [21]

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$\displaystyle\int\frac{\mathrm dx}{1-x}=-\ln|1-x|+C$

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By integrating both sides, we get

$\displaystyle-\ln(1-x)=C+\sum_{n=0}^\infty\frac{x^{n+1}}{n+1}$

If $x=0$ , then

$\displaystyle-\ln1=C+\sum_{n=0}^\infty\frac{0^{n+1}}{n+1}\implies 0=C+0\implies C=0$

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$\displaystyle\ln(1-x)=-\sum_{n=0}^\infty\frac{x^{n+1}}{n+1}$

We can shift the index to simplify the sum slightly.

$\displaystyle\ln(1-x)=-\sum_{n=1}^\infty\frac{x^n}n$

b. The power series for $x\ln(1-x)$ can be obtained simply by multiplying both sides of the series above by $x$ .

$\displaystyle x\ln(1-x)=-\sum_{n=1}^\infty\frac{x^{n+1}}n$

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3 years ago

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Answer:

Option B.

Step-by-step explanation:

The given data set is

34, 35, 41, 28, 26, 29, 32, 36, 38, 40

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Mean of the data is

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Formula for mean deviation is

$\text{Mean deviation}=\dfrac{\sum |x-mean|}{n}$

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How do you simplify without using a calculator (-5)(7)+4×5​

How do you simplify without using a calculator (-5)(7)+4×5