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Irina18 [472]
3 years ago
6

Noah bought 15 baseball cards for $9.00.Assuming each baseball cards costs the same amount, how much will 12 baseball cards cost

?
Mathematics
2 answers:
Anastasy [175]3 years ago
4 0

First, we find how much 1 baseballs card costs.

1 card = 0.60

12*0.6 = $7.20

frez [133]3 years ago
3 0

Answer:$7.20

Step-by-step explanation: Using the idea of proportion

15 base ball cost $9.00

12 base ball cost $x

i.e

15= $9.00

12 = $x

Then we cross multiplied

15 × x = 12 × $9.00

15 × x = $108

Then we divide bothside by 15

x = $105/15

x = $7.2

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3 0
2 years ago
What is k/5.2 + 81.9= 47.2
weqwewe [10]
Solution for k/5.2+81.9=47.2 equation:
<span>k in (-oo:+oo)

k/5.2+81.9 = 47.2 // - 47.2

k/5.2-47.2+81.9 = 0

0.19230769*k-47.2+81.9 = 0 // - 81.9-47.2

0.19230769*k = -(81.9-47.2) // : 0.19230769

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k = 5.20000006*(47.2-81.9)

k = 5.20000006*(47.2-81.9)

Always Practice, It makes Perfect! Anyways, I hope I helped... It would be nice if you can answer mine too, But you dont have to! ;) </span><span>brainly.com/question/253764
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