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Nostrana [21]
3 years ago
14

HELP PLEASE! for p(x)=-2x+5 determine: p(5) p(0) p(-1/2)

Mathematics
1 answer:
Naya [18.7K]3 years ago
8 0

Answer:

p(5) =  - 5 \\ p(0) = 5 \\ p( -  \frac{1}{2} ) = 6

Step-by-step explanation:

p(x) =  - 2x + 5

We substitute x = 5,0 and - 1/2 in the equation.

p(5) =  - 2(5) + 5 \\ p(5) =  - 10 + 5 \\ p(5) =  - 5

p(0) =  - 2(0) + 5 \\ p(0) = 0 + 5  \\ p(0) = 5

p( -  \frac{1}{2} ) =  - 2( -  \frac{1}{2} ) + 5 \\ p( -  \frac{1}{2} ) = 1 + 5 \\ p( -  \frac{1}{2} ) = 6

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£980 is divided between Caroline, Sarah & Gavyn so that Caroline gets twice as much as Sarah, and Sarah gets three times as
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<u><em>Solution:</em></u>

Given that £980 is divided between Caroline, Sarah & Gavyn

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Substitute eqn 1 and eqn 4 in eqn 3

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