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2 years ago

14

The skating rink rented 218 pairs of skates during the month of April and 3 times that many in May how many pairs of skates did

the rink rent I during April and may

1 answer:

MAXImum [283]2 years ago

8 0

Rented 972 skates during April and may
218×3= 564
564+218= 972

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Two different lines lie in the same plane.

nikitadnepr [17]

Answer:

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2 years ago

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Find an equation in slope-intercept form for the line with a zero slope and passes through (12, -9).

Virty [35]

If the slope is 0, then x does not change at all.

take the given y coordinate, and make that the equation.

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2 years ago

Water pours into a tank at the rate of 2000 cm3/min. The tank is cylindrical with radius 2 meters. How fast is the height of wat

Gennadij [26K]

Volume of water in the tank:

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Differentiate both sides with respect to time <em>t</em> :

$\dfrac{\mathrm dV}{\mathrm dt}=\pi(200\,\mathrm{cm})^2\dfrac{\mathrm dh}{\mathrm dt}$

<em>V</em> changes at a rate of 2000 cc/min (cubic cm per minute); use this to solve for d<em>h</em>/d<em>t</em> :

$2000\dfrac{\mathrm{cm}^3}{\rm min}=\pi(40,000\,\mathrm{cm}^2)\dfrac{\mathrm dh}{\mathrm dt}$

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(The question asks how the height changes at the exact moment the height is 50 cm, but this info is a red herring because the rate of change is constant.)

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Anna71 [15]

Answer:

$\huge \boxed{ \boxed{ - \frac{1}{2} }}$

Step-by-step explanation:

The slope of a line given two points can be found by using the formula

$m = \frac{ y_2 - y _ 1}{x_ 2 - x_ 1} \\$

From the question we have

$m = \frac{6 - 8}{12 - 8} = - \frac{2}{4} = - \frac{1}{2} \\$

We have the final answer as

$- \frac{1}{2} \\$

Hope this helps you

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