3 years ago

Does anyone know the answer ?

Mathematics

1 answer:

alexira [117]3 years ago

4 0

Answer:

b = √a² + c² is incorrect and different from other 3

Step-by-step explanation:

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The cost of a parking permit consists of a one-time administration fee plus a monthly fee. a permit purchased for 12 months cost

julsineya [31]

let

x--------> the monthly fee

y--------> the administration fee

we know that

$660=y+12x$ --------> equation $1$

$810=y+15x$ --------> equation $2$

Multiply by $-1$ equation $1$

$-660=-y-12x$ ------> equation $3$

Adds equation $2$ and equation $3$

$810=y+15x\\-660=-y-12x\\---------\\ 810-660=15x-12x\\ 3x=150\\ x=50\ dollars$

Find the value of y

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therefore

the answer is

the administration fee is equal to $60\ dollars$

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