3 years ago

Explain how you can use a model to find 4 x 3/4 include a drawing and a solution

Mathematics

1 answer:

kirza4 [7]3 years ago

7 0

Answer:

4 x 3/4 = 3

Step-by-step explanation:

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A spherical balloon is inflating with helium at a rate of 64 pi StartFraction ft cubed Over min EndFraction . How fast is the b

olga2289 [7]

Answer:

The radius of the balloon is increasing at a rate of 4 feet per minute.

Step-by-step explanation:

We are given the following in the question:

$\dfrac{dV}{dt} = 64\pi \dfrac{\text{ ft}^3}{\text{min}}$

Volume of sphere is given by

$V = \dfrac{4}{3}\pi r^3$

where r is the radius of the balloon.

Instant radius, r = 2 ft

Rate of change of volume =

$\dfrac{dV}{dt} = \dfrac{d}{dt}(\dfrac{4}{3}\pi r^3)\\\\\dfrac{dV}{dt} =4\pi r^2\dfrac{dr}{dt}$

Putting values, we get,

$64\pi = 4\pi (2)^2\dfrac{dr}{dt}\\\\\Rightarrow \dfrac{dr}{dt} = 4$

Thus, the radius of the balloon is increasing at a rate of 4 feet per minute.

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3 years ago

The graph of y = 2 is shifted down by 6 units and to the left by 9 units.

luda_lava [24]

Answer:

(-9, -4)

Step-by-step explanation:

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3 years ago

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gregori [183]

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Step-by-step explanation:

5/8 of 56 apples are ripe i.e 35 apples are ripe and the rest 56-35 apples are not.

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Find the reference angle for a rotation of 208º.

blsea [12.9K]

Answer:

I'm not sure the answer but I can tell you how to solve.

Step-by-step explanation:

Identify your initial angle. For this example, we’ll use 440° 2. The angle is larger than a full angle of 360°, so you need to subtract the total angle until it’s small. 440° - 360° = 80° 3.

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Mazyrski [523]

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