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2 years ago

If a hand sanitizer cleans 99.9% of bacteria if u use it 2 times does that make it 100%

Mathematics

1 answer:

Viktor [21]2 years ago

7 0

Answer:

It's true

Step-by-step explanation:

I hope it helps you

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The volume of a cone of radius r and height h is given by V=πr²h³. If the radius and the height both increase at a constant rate

Aloiza [94]

Answer:

The volume of cone is increasing at a rate 1808.64 cubic cm per second.

Step-by-step explanation:

We are given the following in the question:

$\dfrac{dr}{dt} = 12\text{ cm per sec}\\\\\dfrac{dh}{dt} = 12\text{ cm per sec}$

Volume of cone =

$V = \dfrac{1}{3}\pi r^2 h$

where r is the radius and h is the height of the cone.

Instant height = 9 cm

Instant radius = 6 cm

Rate of change of volume =

$\dfrac{dV}{dt} = \dfrac{d}{dt}(\dfrac{1}{3}\pi r^2 h)\\\\\dfrac{dV}{dt} = \dfrac{\pi}{3}(2r\dfrac{dr}{dt}h + r^2\dfrac{dh}{dt})$

Putting values, we get,

$\dfrac{dV}{dt} = \dfrac{\pi}{3}(2(6)(12)(9) + (6)^2(12))\\\\\dfrac{dV}{dt} =1808.64\text{ cubic cm per second}$

Thus, the volume of cone is increasing at a rate 1808.64 cubic cm per second.

5 0

3 years ago

Solve using the quadratic equation. Round your solution to the nearest hundredth of 2x^2-3x+4

ANTONII [103]

Answer:

brain list me please

Step-by-step explanation:

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3 years ago

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CAN SOMEONE PLS HELP ME I WILL MAKE BRAINLIEST PLSSS

love history [14]

Answer:

a) 300 miles

b) 2pm}

That is all I can help you :(

Step-by-step explanation:

8am + 6hrs =14hrs =2pm

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3 years ago

The shapes show that there are 4 squares for every

mina [271]

Answer:

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3 years ago

A credit card customer owes $325.60.

Serjik [45]

Answer:

205.60

Step-by-step explanation:

325.60-120=205.60

The customer still owes 205.60

7 0

3 years ago

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