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Kruka [31]
3 years ago
6

Please help. I don't understand​

Mathematics
1 answer:
GaryK [48]3 years ago
6 0

9514 1404 393

Answer:

  8m³ -4m² +3m

Step-by-step explanation:

The perimeter of a triangle is the sum of the lengths of its three sides. Here, you're given the perimeter and two of the sides. The third side will be the length that makes up the difference.

  P = side 1 + side 2 + side 3

  18m³ +2m² -m = (5m³ +3m² -2m) +(5m³ +3m² -2m) + side 3

  18m³ +2m² -m = (10m³ +6m² -4m) + side 3 . . . . . collect terms

  18m³ +2m² -m - (10m³ +6m² -4m) = side 3 . . . . . subtract (10m³ +6m² -4m)

  m³(18 -10) +m²(2 -6) +m(-1 +4) = side 3 . . . . . . . . . group like terms

  8m³ -4m² +3m = side 3

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Step-by-step explanation:

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Harriet is 5 years younger than her brother Charlie. If their ages sum to 37 years, how old is Harriet? Currently stuck on this
kvv77 [185]

Answer:

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6 0
2 years ago
Tom graphed the points A(2,-1) and B(3,4) on a coordinate plane.
FromTheMoon [43]

Answer:

AB = \sqrt{34}

Step-by-step explanation:

Calculate the distance d using the distance formula

d = √ (x₂ - x₁ )² + (y₂ - y₁ )²

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What is the nth term of the linear sequence shown below? -9, -5, -1, 3, 7.
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Answer:

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