All categories

3 years ago

What is a rational number

2 answers:

ozzi3 years ago

6 0

A rational number is any number, positive or negative. This can be numbers including fractions, decimals, whole numbers, and so on.

As long as it is a real number it's a rational number.

In addition, any number that can be turned into a fraction is rational.

liraira [26]3 years ago

5 0

Answer:

A Rational Number can be made by dividing two integers.

Step-by-step explanation:

You might be interested in

What is the prime factorization of 120?

Ludmilka [50]

2 x 2 x 2 x 3 x 5 is the prime factorization of 120

4 0

3 years ago

What scale factors equals 0 .75

Xelga [282]

Answer: 3/4

Step-by-step explanation: 3/4 equals .75

6 0

3 years ago

Factor 72x^2 + 72x^2+ 18x

malfutka [58]

Answer:

Use the app photomath

Step-by-step explanation:

7 0

2 years ago

WILL GIVE BRAINLEST ANSWER IF ANSWERED IN THE NEXT 24 HRS Express the complex number in trigonometric form. -5i

trasher [3.6K]

Answer:

$z=5\left(\cos \left(\dfrac{3\pi}{2}\right)+i\sin \left(\dfrac{3\pi}{2}\right)\right)$

Step-by-step explanation:

If a complex number is z=a+ib, then the trigonometric form of complex number is

$z=r(\cos \theta +i\sin \theta)$

where, $r=\sqrt{a^2+b^2}$ and $\tan \theta=\dfrac{b}{a}$ , $\theta$ is called the argument of z, $0\leq \theta\leq 2\pi$ .

The given complex number is -5i.

It can be rewritten as

$z=0-5i$

Here, a=0 and b=-5. $\theta$ lies in 4th quadrant.

$r=\sqrt{0^2+(-5)^2}=5$

$\tan \theta=\dfrac{-5}{0}$

$\tan \theta=\infty$

$\theta=2\pi -\dfrac{\pi}{2}$ $[\because \text{In 4th quadrant }\theta=2\pi-\theta]$

$\theta=\dfrac{3\pi}{2}$

So, the trigonometric form is

$z=5\left(\cos \left(\dfrac{3\pi}{2}\right)+i\sin \left(\dfrac{3\pi}{2}\right)\right)$

4 0

3 years ago

Read 2 more answers

3x2 + 2(x2 – 20) = 16 - 2x2

lana66690 [7]

3x(2) + 2(2x - 20) = 16 - 2x(2)

6x + 4x - 40 = 16 - 4x

10x - 40 = 16 - 4x

14x - 40 = 16

14x = 56

x = 4

Hope this helps! ;)

8 0

2 years ago