2 years ago

Find f(x) if it is known that f(x−2)=2x−4.

Mathematics

1 answer:

tigry1 [53]2 years ago

3 0

F(x) = 2x
___________

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Brainliest, help, i beggg

Fiesta28 [93]

Across the top: 8, 9, 2

Down the side: 4, 3, 6

8 x 4 = 32

9 x 4 = 36

2 x 4 = 8

4 x 8 = 32

3 x 8 = 24

6 x 8 = 48

Hope this helps!

6 0

2 years ago

Read 2 more answers

Evaluate the summation of negative 2 n minus 3, from n equals 2 to 10..

Alisiya [41]

$\bf \sum\limits_{n=2}^{10}~-2n-3$

so, let's first change the bounds from 1 to 9, so we'll be dropping the indices by 1, in order to do the variable "n".

however, let's use a variable hmmm say "k", where "k" is the value of "n" beginning at 1, thus k = n - 1.

however, if k = n - 1, then k + 1 = n. So let's use those fellows then,

$\bf \sum\limits_{n=2}^{10}~-2n-3\qquad 
\begin{cases}
k=n-1\\
k+1=n
\end{cases}\implies \sum\limits_{k=1}^{9}~-2\stackrel{n}{(k+1)}-3
\\\\\\
\sum\limits_{k=1}^{9}~-2k-2-3\implies \sum\limits_{k=1}^{9}~-2k-5\implies \sum\limits_{k=1}^{9}~-2k-\sum\limits_{k=1}^{9}~5
\\\\\\
-2\sum\limits_{k=1}^{9}~k-\sum\limits_{k=1}^{9}~5\implies -2\left( \cfrac{9(9+1)}{2} \right)\qquad -\qquad (9\cdot 5)
\\\\\\
-2(45)-45\implies -90-45\implies -135$

5 0

2 years ago

Choose the student who correctly used substitution to determine if 19 was a solution to the equation. Mara's work Juan's work Ac

Anton [14]

Answer:

Juan’s work is true for those who are un assured enjoy !! ^^

Step-by-step explanation: