3 years ago

Find(x)=-x^2-4x+13 find f(3)

Mathematics

1 answer:

hichkok12 [17]3 years ago

5 0

Answer: $f(3)=-8$

Step-by-step explanation:

$f(x)=-x^2-4x+13\\f(3)=-(3)^2-4(3)+13\\f(3)=-(9)-12+13\\f(3)=-9+1\\f(3)=-8$

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3 years ago

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notka56 [123]

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Step-by-step explanation:

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3 years ago

Decrease £19064.67 by 9.5% Give your answer rounded to 2 DP.

alina1380 [7]

Answer:

New amount (decrease) = £17253.53

Step-by-step explanation:

Given the following data;

Amount = £19064.67

Percentage = 9.5%

To find the percentage decrease;

$Percentage \; cost = \frac {9.5}{100} * 19064.67$

$Percentage \; cost = 0.095 * 19064.67$

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Substituting into the equation, we have;

New amount (decrease) = £19064.67 - £1811.14

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3 years ago