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snow_tiger [21]
3 years ago
9

Can anybody help me with the explanation

Mathematics
1 answer:
Delvig [45]3 years ago
3 0

Answer:

see explanation

Step-by-step explanation:

f(3) means the y-coordinate of the point (3, y) that lies on f(x).

Aha! Now we have a path to the solution!

We can test random values for y, such as (3, 1), (3, 2), or even (3, 1000).

This leads us to drawing lines.

Answer: We draw the line x=3(equivalent of testing out random points), and where it intersects the graph of f(x)! is our answer!

(Note: it can only intersect once, otherwise it would fail the vertical line test and wouldn't be a function)

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What is the value of the expression? 2.5(j x k)/j when j=6 and k=4
natali 33 [55]

Answer:

10

Step-by-step explanation:

=2.5(6*4)/6

=2.5*4(6 and 6 gets cancel)

=10

3 0
3 years ago
How do you simplify ratio?
Vaselesa [24]
Ratio can be simplified by dividing both sides of the ratio by Highest Common Factor The highest common factor is the largest number that goes into both numbers of your ratio. example
Simplify 15 : 9

Ratio 15 : 9 Factors of 15 1 , 3 , 5 , 15 Factors of 9. 1 , 3 , 9 Greatest Common Factor (G.C.F)3 Divide both by G.C.F 15 ÷ 3 = 5
9 ÷ 3 = 3 Ratio in simplest form 5 : 3
8 0
4 years ago
Can someone help with this?
bagirrra123 [75]

Answer:


Step-by-step explanation:

0.2x+2.7x−8.1 = - 5.2x and 6.9+1.1x = 8

Ig you add them it would be 2.8

5 0
4 years ago
Read 2 more answers
if the product of 4 and a number is decreased by 12, the result is twice the opposite of the number. Find the number. EXPLAIN PL
ELEN [110]
Answer:  The number is:  "2 " .
__________________________________________
Explanation:
__________________________________________
Write the expression; which is an equation, as follows:
__________________________________________
     " 4x <span>− 12 = 2(-x) " ;  in which "x" represents "the number for which we shall                                       solve" .
___________________________________________
Note:  

If the "number" = "x" ;  the "opposite of the number"  =  " -x " ;
</span>___________________________________________
Rewrite as:  " 4x <span>− 12 = -2x " ;
</span>_____________________________________________
     →  Add "12" ; & add "2x" ; to EACH SIDE of the equation:

                      4x − 12 + 12 + 2x = -2x + 12 + 2x ;

           to get:    6x  = 12  ;
____________________________________________________
 Now, divide each side of the equation by "6" ; 
     to isolate "x" on one side of the equation; & to solve for "x" ;
____________________________________________________
                         6x / 6  =  12 / 6 ;

                    to get:    x = 2 .
____________________________________________________
Answer:  The number is:  "2 " .
____________________________________________________
Let us check our answer, by plugging in "2" for "x" in our original equation:
_____________________________________________________
        →   " 4x − 12 = 2(-x) " ;

  Let us plug in "2" for "x" ; to see if the equation holds true; that is; if both side of the equation are equal; when "x = 2" ;

        →   " 4(2) − 12 = ?  2(-2) ?? 

        →    8 − 12 = ?  -4 ? ;
 
        →    -4 = ? -4 ??  Yes!
 __________________________________________________    
6 0
3 years ago
What is the equation of the line in standard form?
Paha777 [63]
I Would Say A Is The Correct One
8 0
4 years ago
Read 2 more answers
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