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Sonja [21]
3 years ago
12

Solve each problem. Explain or show your reasoning.

Mathematics
1 answer:
Rufina [12.5K]3 years ago
5 0
1: 40 2: 78 3: 48 4: 26 5: 15 6: 70
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The perimeter of a pentagon is 48. One side is equal to x, two sides are twice x and two sides are three more than x. What are t
DochEvi [55]

Answer:

  side lengths are 6, 12, 12, 9, 9

Step-by-step explanation:

The perimeter is the sum of the lengths of the sides:

  x + 2x + 2x + (x+3) + (x+3) = 48

  7x +6 = 48 . . . . collect terms

  7x = 42 . . . . . . .subtract 6

  x = 6 . . . . . . . . . divide by 7

Substitute this value into the expressions for the side lengths:

  x = 6

  2x = 12

  x+3 = 9

The side lengths are 6, 12, 12, 9, 9.

4 0
3 years ago
He sum of two numbers is negative twelve​, and one number is five​ less than the other. Using the variables mm​ and nn​ to repre
arlik [135]

Answer:

mm + nn = -12

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Step-by-step explanation:

two equations can be derived from the question

6 0
3 years ago
N/4 + 12 =18 i will give brainllest
Hoochie [10]

Answer:

n = 24

Step-by-step explanation:

subtract 12

n/4 = 6

multiply by 4

n = 24

7 0
3 years ago
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What is the expression below?<br> 26 + 67 + 3x2³
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Answer:

24x+93

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Change from $20 after spending $13.76
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20 - 13.76 = 6.24

The change after spending $13.76 would be $6.24.
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