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Lina20 [59]
3 years ago
7

If f(x) = х2 – 2х + 3, thеn find f(-3).

Mathematics
1 answer:
exis [7]3 years ago
3 0

Answer:

\huge\boxed{\sf f(-3) = 18}

Step-by-step explanation:

\sf f(x) = x^2 - 2x + 3

<u>Put x = -3</u>

\sf f(-3) = (-3)^2 -2(-3) + 3\\f(-3) = 9 + 6 + 3\\f(-3) = 18

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Determine the mechanical energy of this object a 1kg pendulum at a height of 1-meter
Lemur [1.5K]

Answer:

A

Step-by-step explanation:

Mechanical energy (ME) is Kinetic energy + potential energy

Where

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So,

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3 years ago
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\begin{bmatrix}-5x+2y-2z=26\\ 3x+5y+z=-22\\ -3x-5y-2z=21\end{bmatrix}

Now by Cramer's Rule, we would first write down the matrix of the coefficients , replacing each column with the answer column -

\begin{bmatrix}-5&2&-2\\ 3&5&1\\ -3&-5&-2\end{bmatrix} ,

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Replace each column of the coefficients shown at the top, with the answer column at the bottom respectively -

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