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vlabodo [156]
3 years ago
9

Help!!!!! plz ill award as brainliest

Mathematics
2 answers:
Ber [7]3 years ago
7 0

Answer:

x = 12 dimes and 3x-7 = (3*12)-7 = 29 nickels in the piggy bank

Step-by-step explanation:

Hope this helps

natali 33 [55]3 years ago
5 0

Answer:

see below

Step-by-step explanation:

1.

total = $2.65 = d + n

let d = dimes

   n = nickels

nickels = 3d - 7

plugin values into the formula:

2.65 = d + 3d - 7

2.65 + 7 = 4d

d = <u>9.65 </u>

       4

d = $2.41

nickels = 3d - 7

             = 3(2.41) - 7

          n = $0.24

----------------------------------------------------------

2.

since Cindy ate 30, less than Ann and Ben together so, the equation is

7x = 5x + 5x - 30

7x - 10x = -30

x = 30/3

x = 10

ann   5 x 10 = 50

ben   5 x 10 = 50

cindy 7 x 10 =<u> 70   </u>

total            = 170

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