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Solnce55 [7]
3 years ago
9

What is y=2x+4 and 3x+y=9 substitution method

Mathematics
1 answer:
soldier1979 [14.2K]3 years ago
8 0
You plug in 2x + 4 into the y for the other equation (3x +y ) and solve for it
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Write the value of f(-3).<br> f(x) = -x2 + 3x - 11
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The exact value is -3f

Step-by-step explanation:

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4 years ago
How do i solve this question?
Andrews [41]

when it comes to checking if a function is even or odd, it boils down to changing the argument, namely x = -x, and if the <u>resulting function is the same as the original</u>, then is even, if the <u>resulting function is the same as the original but negative</u>, is odd, if neither, well then neither :).


anyway, that said, let's first expand it and then plug in -x,


\bf f(x)=(x^2-8)^2\implies f(x)=(x^2-8)(x^2-8)\implies f(x)=\stackrel{FOIL}{x^4-16x^2+64}\\\\[-0.35em]~\dotfill\\\\f(-x)=(-x)^4-16(-x)^2+64\qquad \begin{cases}(-x)(-x)(-x)(-x)=x^4\\(-x)(-x)=x^2\end{cases}\\\\\\f(-x)=x^4-16x^2+64\impliedby \stackrel{\textit{same as the original}}{Even}

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4 years ago
Pencils A hexagonal pencil is a regular hexagonal prism, as shown
sukhopar [10]

The answer will be multiple times wich the number needs to change

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3 years ago
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Step-by-step explanation:

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What should you do to solve the following equation? 5q = 7 A.Multiply both sides by 7 B. Divide both sides by 7 C. Multiply both
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D

Step-by-step explanation:

Since 5 is being multiplied with q dividing both sides by 5 would cancel out the 5 from 5q leaving us with q and on the other side of the equal sign 5/7 or 1.4 is going to be the value of q

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3 years ago
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