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VashaNatasha [74]
3 years ago
12

Agatha is five times older than her son bob. three years ago she was nine times older. how old is agatha?

Mathematics
1 answer:
Naya [18.7K]3 years ago
4 0
Write an equation system based on the problem
"Agatha is five times older than her son, Bob" could be written as:
  a = 5b.......(first equation)
"Three years ago, she was nine times older" could be written as:
  a - 3 = 9(b - 3)......(second equation)

Solve the equation system
To find the value of b, substitute 5b as a to the second equation
a - 3 = 9(b - 3)
5b - 3 = 9(b - 3)
5b - 3 = 9b - 27
5b - 9b = -27 + 3
-4b = -24
   b = -24/-4
   b = 6
Her son, Bob, is 6 years old

To find Agatha's age, substitute the value of b to the first equation
a = 5b
a = 5 × 6
a = 30
Agatha is 30 years old
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the graph opens upward

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Answer: The volume of the soup can is less that that of the pan, so the soup will fit in the pan.

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a. V = s3

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V = 7 km × 7 km × 7 km

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V = 400 cu. ft.

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V = l × w × h

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V = 144 cu. ft.

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Both the can and the pan are cylindrical shapes. Compare the volumes of the two objects.

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V = 3.14 × 2.25 sq. in. × 5 in.

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