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3 years ago

6

jane is practicing solving systems of equations by inspection.she thinks that y=5/6x+2 and y=5/6x-2 would have exactly one solut

ion.is she correct? why or why not?

1 answer:

luda_lava [24]3 years ago

5 0

It's no solution since the lines are parallel to each other. therefore, jane is WRONG
Parallel lines: same slope but different y intercept

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For easier calculation,
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3 years ago

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$-5.3\:\text{ft/s}$

Step-by-step explanation:

We start by applying the Pythagorean theorem to the ladder, with its length L as the hypotenuse:

$L^2 = 100\:\text{ft}^2 = x^2 + y^2$

where x is the vertical distance from the top of the ladder to the ground and y is the horizontal distance from the bottom of the ladder to the wall. Taking the derivative of the above expression with respect to time, we get

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Solving for dx/dt, we get

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when x = 6 ft. So the rate at which the top of the ladder is going down is

$\dfrac{dx}{dt} = -\left(\dfrac{\sqrt{100\:\text{ft}^2 - (6\:\text{ft})^2}}{6\:\text{ft}}\right)(4\:\text{ft/s})$

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3 years ago

I need the scale factor of this please, its due today:)

Sav [38]

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Step-by-step explanation:

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3 years ago