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VMariaS [17]
2 years ago
13

Please help

Mathematics
1 answer:
frosja888 [35]2 years ago
4 0

Answer:

1/3

Step-by-step explanation:

i found it easily also im good with slopes :)

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a bookstore has four boxes of books each box contains 20 books on Monday the book store sold 16 books how many books remain to b
vitfil [10]

Answer:64

Step-by-step explanation:

You have the other 3 box's with 20 left which is 60 so all you gotta do is 20-16 which is 4

6 0
3 years ago
Solve 2x3 + x2 - 15x completely by factoring.
zhuklara [117]
Answer:  [D]:  " x = 0, -3, 5/2 "  .

{Assuming:  " 2x³ + x²  − 15x = 0 ".}.
__________________________________________
Explanation:
___________________________________
Given:
_________________________________
     2x³ + x² − <span>15x ;
 __________________________________
</span>        →  (2x³ + x²) − 15x ;
  
        →   2x³ + x² − 15x  =   x * (2x² + x − 15) ;
         
        →  Factor the expression:  "(2x² + x − 15)" ;
                                     
             → (2x² + x − 15) =  
            
            →   2x² − 5x + 6x − 15 ;

           →  Add the "first TWO (2) terms", and pull out the "like factors" ;                                       →  x*(2x − 5) ;

           →  Add the "last TWO (2) terms, pulling out "common factors";
                            →  3*(2x − 5) ;

           →  Now, add up the previous FOUR (4) terms; to get:

                            → (x + 3)(2x − 5) ;  

           → Now, we have factored the:

                    "(2x² + x − 15)" of:  " x*(2x² + x − 15) " ; 

           →  So we add the "x"; and write the entire factored expression:
______________________________________________________
                      →  x*(x + 3)(2x − 5) ;           
_____________________________________
Now, assume the question is asking to solve for "x" by factoring;
   when the expression is "equal to zero" ;
_______________________________________
That is, when:  

                →  x*(x + 3)(2x − 5) = 0 ;
____________________________________________
Since we have THREE (3) multiplicands;  and anything times "0" equals "0" ;
    this equation holds true when:
________________________________
  1) x = 0 ;
_______________
  2) (x + 3) = 0 ;
  
Subtract "3" from each side of the equation;

   x + 3 − 3 = 0 − 3 ; 
  
         x = -3 ; 
_______________________
3)  2x − 5 = 0 ; 

Add "5" to each side of the equation;

2x − 5 + 5 = 0 + 5 ;

2x = 5 ; Now, divide EACH side of the equation by "2" ; to isolate "x" on one side of the equation; and to solve for "x" ; 

2x/2 = 5/2 ;

x = 5/2; or, write as 2.5; or write as 2<span>½ .
</span>_____________________________________
Put simply, the equation is true when:
_________________________________________
    x = 0, -3, 5/2 ;  which is: Answer choice: [D].
_________________________________________

7 0
3 years ago
For the following right triangle, find the side length x.<br> Please help
Assoli18 [71]

Answer:

you have to time 15 ×8

Step-by-step explanation:

that is it

7 0
3 years ago
Question listed below.​
matrenka [14]

Answer:

I think its 14 students

Step-by-step explanation:

40%x35=14

7 0
3 years ago
Read 2 more answers
With regard to mathematics, what is in excepted statement of fact that is used to prove other statements
ehidna [41]

Answer:

Axiom

Step-by-step explanation:

This is called a axiom. Not too sure if you mean the the definition but this is the definition.  Hope this helped c:

5 0
3 years ago
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