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3 years ago

Help pleaseeeeeeeeeeeeee

Mathematics

1 answer:

wolverine [178]3 years ago

4 0

Answer:

4z^2+7z

you have to combine the like terms

7z+4z^2+6-6

then becomes

(4z^2) + (7z) + (6-6)

gets you to the simplified version which is

4z^2 +7z

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Suppose the radius of the sphere is increasing at a constant rate of 0.3 centimeters per second. At the moment when the radius i

elixir [45]

<h2>At the moment when the radius is 24 centimeters, the volume is increasing at a rate of 2171.47 cm³/min.</h2>

Step-by-step explanation:

We have equation for volume of a sphere

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

where r is the radius

Differentiating with respect to time,

$\frac{dV}{dt}=\frac{d}{dt}\left (\frac{4}{3}\pi r^3 \right )\\\\\frac{dV}{dt}=\frac{4}{3}\pi \times 3r^2\times \frac{dr}{dt}\\\\\frac{dV}{dt}=4\pi r^2\times \frac{dr}{dt}$

Given that

Radius, r = 24 cm

$\frac{dr}{dt}=0.3cm/s$

Substituting

$\frac{dV}{dt}=4\pi r^2\times \frac{dr}{dt}\\\\\frac{dV}{dt}=4\pi \times 24^2\times 0.3\\\\\frac{dV}{dt}=2171.47cm^3/min$

At the moment when the radius is 24 centimeters, the volume is increasing at a rate of 2171.47 cm³/min.

4 0

3 years ago

|x-2| if x >5 <br> Plz help

dimulka [17.4K]

Answer:

Step-by-step explanation:

4 0

3 years ago

Which is a solution for 3 > f? f = 7 f = 9 f= 3 f =2?

Fed [463]

Answer:

F = 2

Step-by-step explanation: If you want to know which one is a solution, you have to substitute the numbers in for F.

F = 7:

3 > f

3 > 7

This is false because 3 is NOT greater than 7, it is less than 7.

F = 9:

3 > f

3 > 9

This is false because 3 is NOT greater than 9, it is less than 9.

F = 2:

3 > f

3 > 2

This is TRUE because 3 IS greater than 2.

Hope this help you!!! :)

4 0

3 years ago

Find -5/-1 1/4 write in simplest form

sdas [7]

Answer: it is the fraction

55/4

8 0

3 years ago

Someone please help!! I’ll give brainliest!!

IrinaVladis [17]

Answer:

V = 200.96 m^3

Step-by-step explanation:

V=1/3hπr²

h=12, r=4

V = 1/3 (12) (3.14) (4^2)

V = 1/3 (12) (3.14) (16)

V = 200.96 m^3

3 0

3 years ago

Read 2 more answers