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Karo-lina-s [1.5K]
3 years ago
12

Evaluate the expression |3x-1| for x=-2

Mathematics
2 answers:
Gnesinka [82]3 years ago
6 0

Answer:

-7

Step-by-step explanation:

Step 1: Substitute -2 for x in the expression.                                                                    Step 2: 3 x -2= -6                                                                                                               Step 3: -6-1=-7                                                                                                                   Step 4: [ 3(-2)-1]                                                                                                           Step 5:    -6+-1=-7                                                                                                                     Hopefully, this correctly answer your question! :)     Thank you.

Andreyy893 years ago
3 0
The answer is 7
because the equation is |(3)(-2)-1|
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Can someone please help me with this problem? You need to find the value of x and y by using the strategy of ELIMINATION. Please
Setler [38]

Answer:

x = 136/35; y = -⁹/₁₀

Step-by-step explanation:

(1)         7x + 8y = 20

(2)        7x – 2y = 29       Subtract (2) from (1)

                  10y =  -9        Divide each side by 10

(3)                 y =  -⁹/₁₀     Substitute (3) into (1)

      7x - 2(-⁹/₁₀) = 29

      7x + 18/10  = 29                       Subtract 18/10 from each side

      7x              =      29 - 18/10

      7x              = (290 - 18)/10

      7x              =          272/10        Divide each side by 7

        x              =           272/70

        x              =           136/35

x = 136/35; y = -⁹/₁₀

Check:

(1) 7(136/35) + 8(-⁹/₁₀) = 20

      136/5    -   72/10 = 20

      136/5    -   36/5  = 20

                      100/5  = 20

                       20      = 20

(2) 7(136/35) – 2(-⁹/₁₀)  = 29

       136/5    +    18/10 = 29

       136/5    +      ⁹/₅    = 29

                        145/5  = 29

                        29       = 29

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3 years ago
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AnnyKZ [126]

Red shirts and blue shirts equally count to his bonus, so he has 15 + 23 = 38 shirts sold at this moment. He needs to sell 75 shirts for the bonus. We subtract our goal from what he have; 75 - 38 = 37.


The strategy here: subtract the goal (75 shirts) from what you did to get to the goal (15 shirts and 23 shirts).


Nathan needs to sell 37 more shirts for the bonus. Hope this helps.

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Answer:

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Step-by-step explanation:

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