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2 years ago

For f(x) = √x-3 find f(f^-1(4))

Mathematics

1 answer:

vlada-n [284]2 years ago

3 0

Answer:

Step-by-step explanation:

f⁻¹(x) = x²+3, but none of that matters, since f(f⁻¹(x)) = x

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What is another way to write this number? 300 plus 70 plus 5/10 plus 8/100

artcher [175]

Answer:

30,000% plus 7,000% plus 50% plus 8%

Step-by-step explanation:

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3 years ago

Read 2 more answers

What is the sum of the geometric series

lbvjy [14]

If $S$ denotes the sum of the first $n$ terms of a geometric series with first term $a$ and common ratio $r$ , then

$S=a+ar+ar^2+\cdots+ar^{n-3}+ar^{n-2}+ar^{n-1}$
$rS=ar+ar^2+ar^3+\cdots+ar^{n-2}+ar^{n-1}+ar^n$
$\implies S-rS=a+(ar-ar)+(ar^2-ar^2)+\cdots+(ar^{n-1}-ar^{n-1})-ar^n$
$\implies (1-r)S=a(1-r^n)$
$\implies S=a=\dfrac{1-r^n}{1-r}$

Using summation notation, you have

$S=\displaystyle\sum_{x=1}^nar^{x-1}=\sum_{x=0}^{n-1}ar^x=a\dfrac{1-r^n}{1-r}$

In this case, you have $a=2$ , $r=\dfrac12$ , and $n=16$ . So the value of the sum is

$\displaystyle\sum_{x=0}^{15}2\left(\frac14\right)^x=2\dfrac{1-\left(\frac14\right)^{16}}{1-\frac14}\approx2.67$

Rounded to the nearest whole number, the answer would be 3.

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3 years ago

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A fitness center currently has 320 members. Monthly membership fees are $45. The manager of the fitness center has determined th

Vladimir [108]

I thinks it’s a because it’s

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2 years ago

Audrey and her family are discussing how to pay for her college

Elan Coil [88]

Answer:

$137.50

Step-by-step explanation:

11,000 x .15 (100-.85)=$1.650 amount she will have to pay annually.

$1,650/12months = $137.50 is minimum to save monthly.

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2 years ago

PLEASE ANSWER I NEED ITTY

alexandr1967 [171]

Answer:

13. B

14. A

both declining slopes

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2 years ago