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PtichkaEL [24]
3 years ago
8

Plz help me get the answer

Mathematics
2 answers:
Igoryamba3 years ago
5 0

1/2 a ≤ 12

2(1/2 a) ≤ 2(12)

2/2 a ≤ 24

1a ≤ 24

a ≤ 24

Tcecarenko [31]3 years ago
3 0

Answer:

<h2>a ≤ 24</h2>

Step-by-step explanation:

\dfrac{1}{2}a\leq12\qquad\text{multiply both sides by 2}\\\\2\!\!\!\!\diagup^1\cdot\dfrac{1}{2\!\!\!\!\diagup_1}a\leq(2)(12)\\\\a\leq24

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2 years ago
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See the pic below please! AND SHOW WORK!
irinina [24]

Well I don't know !
Let's check out the choices:

A).    3a - 4b = 21,  a=0, b=7

         3(0) - 4(7) = 21

             0  -  28  = 21    Nope.  That's not true.


B).  3a - 4b = 21,  a=-3,  b=2

     3(-3) - 4(-2) = 21

       -9    +  8  = 21

             -1    = 21      Nope.  That's not right.


C).  3a - 4b = 21,    a=-2,  b=-3

      3(-2) - 4(-3) = 21

         -6  + 12  = 21

                 6  =  21          Nope.  That's not it.

Only one choice left.
This one had better be it:

D).  3a - 4b = 21,    a=7,  b=0

       3(7) - 4(0) = 21

         21 -  0    = 21

               21  =  21            Yay !   That's it !
 
7 0
2 years ago
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