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4 years ago

Please help!!! Which number line shows the solutions to n > -2?

Mathematics

2 answers:

denis-greek [22]4 years ago

7 0

Answer:

The first one.

Step-by-step explanation:

I'm sorry if it's wong

PolarNik [594]4 years ago

4 0

Answer: the first one

Step-by-step explanation:

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What is62% of 25????????????????

dem82 [27]

15.5 because its .62*25

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4 years ago

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Snezhnost [94]

Answer:

5 cups of sugar

Step-by-step explanation:

4/5 times 5 equals a whole number

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2 years ago

Simplify: log base 3 (1/3) ...?

yarga [219]

The answer is 1.

$log_3( \frac{1}{3} )$
_____
Since $log_y(x) = \frac{log_{10}(x)}{log_{10}(y)}$ , then: $log_3( \frac{1}{3} )= \frac{log_{10} ( \frac{1}{3}) }{log_{10}(3)}$
_____
Since $\frac{1}{x} = x^{-1}$ , then: $\frac{log_{10} ( \frac{1}{3}) }{log_{10}(3)} = \frac{log_{10}(3^{-1} )}{log_{10}(3)}$
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Since $log x^{a} =a*logx$ , then: $\frac{log_{10}(3^{-1} )}{log_{10}(3)}= \frac{-1*log_{10}(3)}{log_{10}(3)}$

From here: $\frac{-1*log_{10}(3)}{log_{10}(3)}=-1*\frac{log_{10}(3)}{log_{10}(3)}=-1*1 = -1$

6 0

3 years ago

How do I evaluate this integral?<img src="https://tex.z-dn.net/?f=%20%5Cint%5Climits%20%7B%20%5Cfrac%7Bx%7D%7Bx%5E4%2B1%7D%20%7D

inessss [21]

One thing you could try is to set $x=\sqrt y$ . This makes $y=x^2$ , so that $\mathrm dy=2x\,\mathrm dx$ , and $y^2=x^4$ . So the integral is

$\displaystyle\int\frac x{x^4+1}\,\mathrm dx=\frac12\int\frac{\mathrm dy}{y^2+1}=\frac12\arctan y+C=\frac12\arctan(x^2)+C$

A "trickier" way to do it is to write

$x^4+1=(x^2+\sqrt2x+1)(x^2-\sqrt2x+1)$

so you could decompose the integrand into partial fractions. But that's more work than needed.

4 0

4 years ago

PLZZZZZ HLP ME!!!!!!

tiny-mole [99]

it's (f)

Plz. follow me

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3 years ago

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