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Anna11 [10]
2 years ago
4

Joaquin is four more than half Marjorie's age. Marjorie is also 32 less than three times Joaquin's age. How old is Marjorie, in

years?
Mathematics
1 answer:
puteri [66]2 years ago
8 0
Joaquin = 4 + Marjorie
Marjorie = 3 * Joaquin -32

Let's say Joaquin is x.
Let's say Marjorie is y.

x=4+y
y=3x-32

y=x-4
y=3x-32

x-4=3x-32 (Subsititute)

-4=2x-32

28 = 2x

x = 14

In other words, Joaquin is 14 years old.
Now, substitute:

x=4+y ; x=14

14 = 4+y

y=10

So, Marjorie is 10 years old.


In conclusion, Joaquin is 14 years old and Marjorie is 10 years old.


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Answer:

Solution: The average rate of change of  represents that the second variable is decrease by 14 if the first variable increase by 3. In terms of water slide the vertical height of slide is decreased at the rate of 4.66 per unit. The vertical height of the slide decrease 70 units from x = 0 to x = 15.

Explanation:

The rate of change shows the change in first variable with respect to change in second variable.

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Therefore, the average rate of change of  represents that the second variable is decrease by 14 if the first variable increase by 3. In terms of water slide the vertical height of slide is decreased at the rate of 4.66 per unit. The vertical height of the slide decrease 70 units from x = 0 to x = 15.

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