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Salsk061 [2.6K]
3 years ago
7

Determine if -8T- 20 = 4(-2T -5) has one solution, infinitely many solutions, or no solution

Mathematics
2 answers:
AnnZ [28]3 years ago
8 0

Answer:

infinitely many solutions

Step-by-step explanation:

-8T- 20 = 4(-2T -5)

Distribute the 4

-8T- 20 = (-8T -20)

Add 8T to each side

-8T+8T- 20 = (-8T+8T -20)

-20 = -20

Since this is a true statement, there are infinitely many solutions

just olya [345]3 years ago
6 0

Answer:

Step-by-step explanation:

Note that -8T - 20 is 4 times -2T - 5, which comes out to -8T - 20..  Thus, the given equation simplifies to an identity (which is always a true statement).  This equation is true for all T values, and thus has invinitely many solutions.

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Step-by-step explanation:

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Scilla [17]

Answer:  The correct answer is:  [C]:

___________________________________________

              →    " ( 3, -2) " .

___________________________________________

Explanation:

___________________________________________

By looking at the graph {provided) of the lines of the 2 (two) equations given, we see that the two (2) lines intersect at the point at which the coordinates are:   " (3, -2)" ;  that is:  where:  " x = 3;  y = - 2 " ;  (refer to "image attached");

  →  which corresponds to:

 

  →  Answer choice:  [C]: " (3, -2) " .

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Let us check our answer, by plugging in "3" for "x" ; and "-2" for "y" ;

  in Each of the 2 (two) equations given; to see if the equations hold true:

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Equation 1:

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  y = (-5/3)x  + 3  ;

 →  -2  =? (-5/3)*3  + 3 ?  

 →  -2  =?  -5  + 3 ? ;    -2 =? -2 ?  Yes!

_____________________________________

Equation 2:

_____________________________________

 y = (1/3)x -3 ;

→  -2 =? (1/3)*3  - 3 ? ;

→  -2 =?  1 - 3 ?  ;    -2 = ? -2 ?  Yes!

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Both equations hold true when:  "x = 3 ;  and y = -2 " .

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Refer to image attached to see where the lines of the graphs of the equations given intersect.

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Hope this answer is helpful to you!

  WIshing you the best!

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3 0
3 years ago
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4 0
4 years ago
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Step-by-step explanation:

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Therefore, Third Option is correct.

3 0
4 years ago
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