Mathematics: F (x)=-4x^2+9 find f(-3)

F (x)=-4x^2+9 find f(-3) - id429314169502, krisayon8126

joelpimentel

26.08.2021

$f(x) = - 4 {x}^{2} + 9 \\ \\ f( - 3) = - 4 ({ - 3}^{2} ) + 9 \\ = -4 (9) + 9 \\ = - 36 + 9 \\ = - 27$

I hope I helped you^_^

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cigo145

09.01.2023

For 75 g butter ≈ 27 fingers

Step-by-step explanation:

Using unitary method

For 20 fingers = 55 g butter

For 1 g butter = 20/55 fingers

=> For 1 g butter = 4/11 fingers (Simplified form)

Multiplying both sides by 75

=> for 75 g butter = $\frac{4}{11} * 75 {fingers}$

=> For 75 g butter ≈ 27 fingers ( approximately )

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