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3 years ago

Simplify(a + 2b +30) - (40+36-5a)

Mathematics

1 answer:

Crazy boy [7]3 years ago

3 0

Step-by-step explanation:

(a+2b+30)-(40+36-5a)
a+2b+30-40-36+5a
6a+2b-46

hope it helps.

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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.

5 0

3 years ago

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aleksandr82 [10.1K]

Bro i don’t know either

3 0

3 years ago

What is the value of 4³÷ 2³ ?

Sunny_sXe [5.5K]

Answer:

2^3 or 8

Step-by-step explanation:

$4^3\div 2^3= \\\\(2^2)^3\div 2^3= \\\\2^{2\cdot 3}\div 2^3= \\\\2^6\div 2^3=\\\\2^{6-3}=\\\\2^3=\\\\8$

Hope this helps!

3 0

3 years ago

Read 2 more answers

Eight times a number increased by 6 is 62

N76 [4]

8x+6=62

8x=62-6

8x=56

X=56/8

X=7

The answer is 7. Hope this helps!

3 0

2 years ago

Read 2 more answers

If 2x/3 = 8/4, then x=

velikii [3]

Answer:

first cross multiply

2x×4=3×8

8x=24

then, divide both sides by "8" so x could be alone

x=24/8

x=3

i hope this helps, please give me brainliest

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Step-by-step explanation:

3 0

2 years ago

Simplify(a + 2b +30) - (40+36-5a)​

Simplify(a + 2b +30) - (40+36-5a)