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Alecsey [184]
3 years ago
7

if my friend and i went to get ice cream, I have $30 and each ice cream is $5. What equation would help me solve this?

Mathematics
1 answer:
Elden [556K]3 years ago
3 0

Answer:

5x\leq30

Step-by-step explanation:

Let

x -----> the number of ice cream

we know that

5x\leq30

Solve for x

Divide by 5 both sides

x\leq30/5

x\leq 6\ ice\ cream

therefore

The maximum number of ice cream is 6

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5x - y + z = -6<br> 2x + 7y + 3z = 8<br> x + 2z = 6
BabaBlast [244]

Answer:

Step-by-step explanation:

The system of equations given are:

 

 5x - y + z = -6   ------------- i

 2x + 7y + 3z = 8  ---------- ii

  x + 2z = 6 ----------------- iii

Let us deal with equation i and ii first since they have 3 variables x, y and z;

      5x - y + z = -6                 x 7

       2x + 7y + 3z = 8            x 1

    35x  - 7y + 7z  = -42   ----  iv

      2x  + 7y + 3z  = 8       ---- v

Add equation iv and v;

    37x + 10z  = -34 ------vi

So, let us solve equation vi and iii:

               x + 2z = 6 - ---------- iii   x 10

               37x + 10z  = -34  --- iv  x 2

    10x + 20z   = 60         vi

     74x + 20z  = -68        vii

Subtract vi  - vii;

      -64x  = 128

          x  = -2

So;    put x  = -2 into iii;

           x + 2z  = 6

           -2 + 2z  = 6

            2z  = 6 + 2  = 8

           z  = 4

Put x  = -2 and z = 4 into equation i;

  5(-2) - y + 4  =  - 6

   -10 -y  +4  = -6

       -6  - y  = -6

             -y  = 0

              y  = 0

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3 years ago
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Answer:

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Step-by-step explanation:

5(b - 1)

we apply distributive property:

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You are correct. The higher the standard deviation is, the more spread out the data set will be. Nice work.

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iVinArrow [24]

Answer:

4(p−1)(p−3)

Step-by-step explanation:

Factor 4p2−16p+12

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