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3 years ago

7

5) If f(x)=x2-x, what is f(-5)? A. -30 B. -20 C. 20 D. 30

1 answer:

dezoksy [38]3 years ago

7 0

You simply plug it in.

f(x) = x^2 - x
f(-5) = -5^2 - (-5)
f(-5) = -25 - (-5)
f(-5) = -20

hope this was helpful for you.

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liberstina [14]

Answer:

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Step-by-step explanation:

Let suppose that Han's younger sister accelerates at constant rate, then, acceleration ( $a$ ), measured in meters per square second, can be calculated by the following equation:

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Where:

$t_{o}$ , $t_{f}$ - Initial and final times, measured in seconds.

$v_{o}$ , $v_{f}$ - Initial and final speeds, measured in meters per second.

If we know that $t_{o} = 3\,s$ , $t_{f} = 5\,s$ , $v_{o} = 0.5\,\frac{m}{s}$ and $v_{f} = 1.5\,\frac{m}{s}$ , the acceleration of the younger sister is:

$a = \frac{1.5\,\frac{m}{s}-0.5\,\frac{m}{s} }{5\,s-3\,s}$

$a = 0.5\,\frac{m}{s^{2}}$

Han's younger sister accelerated at a rate of 0.5 meters per square second during that time.

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3 years ago

Is this right? and if so. how

Murrr4er [49]

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Step-by-step explanation:

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Step-by-step explanation:

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Using the standard form equation, Ax + By = C, replace Ax and By with these terms.

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