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inna [77]
3 years ago
5

7x+2y=19 7x+8y=13 Please solve it by Simultaneous method

Mathematics
1 answer:
elixir [45]3 years ago
4 0

Answer:

y=-1

x=3

Step-by-step explanation:

7x+2y=19-----(1)

7x+8y=13------(2)

(1)-(2)

(7x+2y)-(7x+8y)=19-13

7x+2y-7x-8y=6

+2y-8y=6

-6y=6

y=-1

by substitute in (1)

7x+2*(-1)=19

7x-2=19

7x=19+2

7x=21

x=21/3

x=3

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Answer: Choice B

If you lower your rates by 6% you will increase the number of occupancies by 12%

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Explanation:

Price Elasticity of Demand is found by dividing the percent change of demand over the percent change in price

\text{Price Elasticity of Demand} = \frac{\% \text{ change in demand}}{\% \text{ change in price}}

If the price drops 6% leads to a 12% increase in demand, then we get this elasticity

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The absolute value of that result is 2. We work backwards going from 2 to see the relationship between the 12% and 6%.

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Side notes:

  • Choice A is incorrect as a price elasticity of demand larger than 2 means we have elastic (rather than inelastic) demand.
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Answer:

A

Step-by-step explanation:

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