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4 years ago

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Composite numbers have less than two factors. more than two factors. exactly two factors. greater than or equal to two factors.C

omposite numbers have
less than two factors.
more than two factors.
exactly two factors.
greater than or equal to two factors.

2 answers:

wel4 years ago

6 0

Exactly two factors.

WINSTONCH [101]4 years ago

5 0

Answer:

C. Exactly two factors.

Step-by-step explanation:

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Melissa buys 2 1/2 pounds of salmon and 1 1/4 pounds of swordfish. She pays a total of $31.25, and the swordfish costs $0.20 per

gregori [183]

Answer:

$16.60

Step-by-step explanation:

2.5x + 1.25(x - .20) = 31.25

2.5x + 1.25x - .25 = 31.25

3.75x - .25 = 31.25

3.75x = 31.25 + .25

3.75x/3.75 = 31.50/3.75

x = 8.40

y = x - .20

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4 years ago

Oil is leaking from an oil tanker, and an expanding circle of oil is spreading on the ocean. The radius, r, of

kaheart [24]

Answer:

$45\pi$ square inches$

Step-by-step explanation:

The radius, r of the expanding circle of oil is modeled by the function:

$r=3\sqrt{s}$ , where s is time in seconds.

When s=5

Radius $r(5)=3\sqrt{5}$ inches$

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Therefore, the area of the oil spill when s=5 seconds

$=\pi* (3\sqrt{5})^2\\=45\pi$ square inches$

The area of the spill when s=5 seconds is 45pi square inches.

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3 years ago

Six times a number a number increased by three is negative twenty-one. Find the number and write the equation

salantis [7]

let number be x

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x=-4

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3 years ago

Write 14/6 as a mixed number

WITCHER [35]

14/6 as a mixed number is 2 and 1/3

8 0

3 years ago

Read 2 more answers

Which expression is a cube root of -1+i√3?

Tpy6a [65]

Answer:

<em>The correct option is C.</em>

Step-by-step explanation:

<u>Root Of Complex Numbers</u>

If a complex number is expressed in polar form as

$Z=(r,\theta)$

Then the cubic roots of Z are

$\displaystyle Z_1=\left(\sqrt[3]{r},\frac{\theta}{3}\right)$

$\displaystyle Z_2=\left(\sqrt[3]{r},\frac{\theta}{3}+120^o\right)$

$\displaystyle Z_3=\left(\sqrt[3]{r},\frac{\theta}{3}+240^o\right)$

We are given the complex number in rectangular components

$Z=-1+i\sqrt{3}$

Converting to polar form

$r=\sqrt{(-1)^2+(\sqrt{3})^2}=2$

$\displaystyle tan\theta=\frac{\sqrt{3}}{-1}=-\sqrt{3}$

It's located in the second quadrant, so

$\theta=120^o$

The number if polar form is

$Z=(2,120^o)$

Its cubic roots are

$\displaystyle Z_1=\left(\sqrt[3]{2},\frac{120^o}{3}\right)=\left(\sqrt[3]{2},40^o\right)$

$\displaystyle Z_2=\left(\sqrt[3]{2},40^o+120^o\right)=\left(\sqrt[3]{2},160^o\right)$

$\displaystyle Z_3=\left(\sqrt[3]{2},40^o+240^o\right)=\left(\sqrt[3]{2},280^o\right)$

Converting the first solution to rectangular coordinates

$z_1=\sqrt[3]{2}(\ cos40^o+i\ sin40^o)$

The correct option is C.

8 0

4 years ago