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3 years ago

Which relation is a function

Mathematics

2 answers:

SSSSS [86.1K]3 years ago

5 0

Answer:

I'm pretty sure it's the top left one

Step-by-step explanation:

A seems to be the only one with any sort of correlation so I believe it's that one.

zmey [24]3 years ago

5 0

Is the top left one

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What is the value of w in this equation? 15 + w = 75

Anton [14]

Answer:

$w=60$

Step-by-step explanation:

$15+w=75$

Subtract 15 from both sides of the equation.

$15+w-15=75-15$

$w=60$

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3 years ago

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lyudmila [28]

Answer:

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3 years ago

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Sphinxa [80]

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3 years ago

The sum of 30 times (1/3)^(n-1) from 1 to infinity

sergeinik [125]

Let

$S_n=\displaystyle1+\frac13+\frac1{3^2}+\cdots+\frac1{3^n}$

Then

$\dfrac13S_n=\displaystyle\frac13+\frac1{3^2}+\frac1{3^3}+\cdots+\frac1{3^{n+1}}$

and

$S_n-\dfrac13S_n=\dfrac23S_n=1-\dfrac1{3^{n+1}}\implies S_n=\dfrac32-\dfrac1{2\cdot3^n}$

and as $n\to\infty$ , we end up with

$\displaystyle\lim_{n\to\infty}S_n=\lim_{n\to\infty}\sum_{i=1}^{n+1}\frac1{3^{i-1}}=\lim_{n\to\infty}\left(\frac32-\frac1{2\cdot3^n}\right)=\frac32$

So we have

$\displaystyle\sum_{n=1}^\infty30\left(\frac13\right)^{n-1}=30\cdot\frac32=45$

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3 years ago

Arc RQ is a minor arc major arc semicircle

Fofino [41]

Omg ur keeping me awake with these notifications!! LOL :-D. JK

Arc RQ is a [minor arc] only because it is less than half the circle, which is 180 [PQ]

** remember that 180° always = half a circle

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4 years ago

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