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3 years ago

What is the greatest four digit number that can be made using the digits 3,1,6, and 4?

Mathematics

1 answer:

Mkey [24]3 years ago

7 0

Answer:

6,431

Step-by-step explanation:

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<img src="https://tex.z-dn.net/?f=z%5E%7B7%7D%3D128i" id="TexFormula1" title="z^{7}=128i" alt="z^{7}=128i" align="absmiddle" cla

abruzzese [7]

If z ⁷ = 128i, then there are 7 complex numbers z that satisfy this equation.

$z^7 = 128i = 2^7i = 2^7e^{i\frac\pi2}$

$\implies z=\sqrt[7]{2^7} e^{i\frac17\left(\frac\pi2+2n\pi\right)}$

(where n = 0, 1, 2, …, 6)

$\implies z = 2 e^{i\left(\frac\pi{14}+\frac{2n\pi}7\right)}$

$\displaystyle\implies z = 2 \left(\cos\left(\frac\pi{14}+\frac{2n\pi}7\right)+i\sin\left(\frac\pi{14}+\frac{2n\pi}7\right)\right)$

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2 years ago

he radius of the base of a cylinder is 10 centimeters, and its height is 20 centimeters. A cone is used to fill the cylinder wit

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Volume of cylinder: $V_{\text{cyl}}=\pi r^2h$ , where $r$ is the radius and $h$ is the height. This volume is $\pi\times10^2\times20=2000\pi$ (cubic cm).

Volume of cone: $V_{\text{cone}}=\dfrac13\pi r^2h$ , with the same variables denoting the same parameters. This volume is $\dfrac13\pi\times5^2\times10=\dfrac{250}3\pi$ (also cubic cm).

The number of times it would take to fill the cylinder with water using the cone as a source would be

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3 years ago

Please help will give brainliest

lara31 [8.8K]

Answer:

the answer is d

Step-by-step explanation:

-[-(7)]

-7= -(7)

-7= -7

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