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kramer
3 years ago
13

Please help me with maths !!!

Mathematics
1 answer:
zlopas [31]3 years ago
3 0

Answer:

  • 170.7 cm

Step-by-step explanation:

Let the original water level is x.

<u>Use below equation to find its value:</u>

  • x + 2.4 + 3 1/2 = 162 + 14.6
  • x + 2.4 + 3.5 = 176.6
  • x + 5.9 = 176.6
  • x = 176.6 - 5.9
  • x = 170.7 cm
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Answer:

52

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jenyasd209 [6]

Answer:

<em>a) 15 b) 6 c) -3</em>

Step-by-step explanation:

x - y = 3

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A wallet contains $460 in $5, $10, and $20 bills. The number of $5 bills exceeds twice the number of $10 bills by 4, and the num
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Answer:

Number of $5 bills = 32

Number of $10 bills = 14

Number of $20 bills = 8

Step-by-step explanation:

Let x number of $5, y number of $10 and z number of $20

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Therefore, x = 2y + 4

The number of $20 bills is 6 fewer than the number of $10 bills.

Therefore, z = y - 6

A wallet contains $460 in $5, $10, and $20 bills.

Therefore,

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                                    40y = 560

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  • Put the value of y into x = 2y + 4 and solve for x

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  • Put the value of y into z = y - 6 and solve for z

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Hence, the each type of bills,

Number of $5 bills = 32

Number of $10 bills = 14

Number of $20 bills = 8

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