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ElenaW [278]
2 years ago
13

NEED HELP IM GIVIN BRAINLIEST AGAIN!!

Mathematics
1 answer:
kaheart [24]2 years ago
5 0

Answer: 41.58$

Step-by-step explanation:

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The perimeter of a square is 66.8 cm. What is the side length of the square?
Svetlanka [38]

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b

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8 0
3 years ago
HELP ASAP
Tanya [424]

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Mason has a collection of 49¢ stamps, 20¢ stamps, and 34 stamps worth $23.55. He has 56 total 49¢ and 20+ stamps and the number
tatuchka [14]

Answer:

Mason has

  • 16 20¢ stamps;
  • 25 3¢ stamps;
  • 40 49¢ stamps.

Step-by-step explanation:

Let x be the number of 20¢ stamps, then the number of 3¢ stamps is  x + 9.

Mason has 56 total 49¢ and 20¢ stamps, then the number of 49¢ stamps is 56 - x.

Amounts:

  • in 49¢: 49(56-x) cents;
  • in 20¢: 20x cents;
  • in 3¢: 3(x+9) cents.

Total amount:

  • 49(56-x)+20x+3(x+9);
  • $23.55.

Hence,

49(56-x)+20x+3(x+9)=2,355\\ \\2,744-49x+20x+3x+27=2,355\\ \\-49x+3x+20x=2,355-2,744-27\\ \\-26x=-416\\ \\26x=416\\ \\x=16

Mason has

  • 16 20¢ stamps;
  • 25 3¢ stamps;
  • 40 49¢ stamps.
5 0
3 years ago
0.000028/(4x10^-4) = ?
Jlenok [28]

Answer:

i got 0.07

Step-by-step explanation:

if its wrong im sorry i got that

5 0
3 years ago
This is Science I could not pick...
andrew-mc [135]

Answer:

Oils

Step-by-step explanation:

:)

8 0
2 years ago
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