Mathematics: F(-3) if f(x) = 4x^2 + 7x

F(-3) if f(x) = 4x^2 + 7x - id34277268487, live4dramaoy0yf9

Ответ:

jljhenkel

31.01.2022

Mathematics

I hope this helps you

let's write -3 for x

f(-3)=4.(-3)^2+7.(-3)

f(-3)=4.9-21

f(-3)=36-21

f(-3)=15

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Ответ:

aziah86

28.06.2022

Mathematics

$three \ quarters \to \frac{3}{4} \\\\ \frac{3}{4} \ of \ 42\£ = \\\\ =\frac{3}{4}*42\£= \\\\ =\frac{3}{2}*21\£= \\\\ =\frac{63\£}{2} = \\\\= \boxed{31.5\£} \\\\\\\ a \ quarter \to \frac{1}{4} \\\\ \frac{1}{4} \ of \ 42\£= \\\\ =\frac{1}{4}*42\£= \\\\ =\frac{21\£}{2}= \\\\ =\boxed{10.5\£}$

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F(-3) if f(x) = 4x^2 + 7x

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