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tigry1 [53]
3 years ago
10

Solve the system of equations-2x+3y=-1 and 7x-8y=16 by combining the equations

Mathematics
1 answer:
patriot [66]3 years ago
7 0

Answer:

( 40 37 , − 39 37 )

Step-by-step explanation:

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The midpoints of a regular hexagon are connected to form a smaller hexagon. The small hexagon has perimeter 2sqrt3. What is the
Ahat [919]

Answer:

4

Step-by-step explanation:

x - length of side of larger hexagon

y - length of side of smaller hexagon

We know that,

x/y = \sqrt{3} /2

y = 2x/\sqrt{3}

Hence,

perimeter of             = (2/\sqrt{3}) * perimeter of smaller hexagon

larger hexagon

                                 = (2/\sqrt{3})*2\sqrt{3}  \\= 4

6 0
4 years ago
Find the sum of 12a + 7b, −6a − 9, and 14a − 12b.
Ivan
The answer is:  [A]:  " 20a − 5b − 9 " .
______________________________________
Explanation:
_______________________________________________
  (12a <span>+ 7b) + (−6a − 9) + (14a − 12b) =
 
   12a </span><span>+ 7b  +  1(−6a − 9) + 1(14a − 12b) =
</span>    
   12a + 7b + (1*-6a) + (1*-9) + (1*14a) + (1* -12b) =
      
    12a + 7b − 6a − 9 + 14a − 12b =  ?

Combine the "like terms:

12a − 6a  + 14a = 20a ; 

7b − 12b =  - 5b ;

and then we have "-9" ;
_____________________________________________________
So, write as:   " 20a − 5b − 9 " ;  which is:  Answer choice:  [A].
______________________________________________________
8 0
3 years ago
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3 packs of hotdogs and 4 packs of buns
4 0
3 years ago
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