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3 years ago

Is -9 a rational or irrational number

Mathematics

1 answer:

daser333 [38]3 years ago

7 0

-9 is a rattional number because it is an integer and it can be squared.

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Can someone help me?

mestny [16]

Answer:

Step-by-step explanation:

To do this, we must use the unit circle. At the angle $\frac{\pi }{6}$ the coordinate pair is ( $\frac{\sqrt{3} }{2}$ , $\frac{1}{2}$ ) and the hypotenuse is 1

Now that we know these we can start using the trig functions

sin = y

cos = x

tan = $\frac{y}{x}$

And the other functions would be the reciprocal of these

csc = $\frac{1}{y}$

sec = $\frac{1}{x}$

cot = $\frac{x}{y}$

This would mean that

sinx = $\frac{1}{2}$

cosx = $\frac{\sqrt{3} }{2}$

tanx = $\frac{1}{\sqrt{3} }$ or $\frac{\sqrt{3} }{3}$ if you're supposed to rationalize your denominators

cscx = 2

secx = $\frac{2}{\sqrt{3} }$ or $\frac{2\sqrt{3} }{3}$

cot = $\sqrt{3}$

6 0

2 years ago

18/4(-11.5)<br><br> Answer that question <br> Thank You!!!

Paha777 [63]

Answer: 207/4 or -51.75

Step-by-step explanation:

3 0

2 years ago

WILL GIVE BRAINLIEST 27 points

tangare [24]

It is not direct variation because it does not follow the equation
y = slopex
THE points do not make the equation true .

3 0

2 years ago

Read 2 more answers

Point One = (0, -2) = Point Two = (-3, -5) <br>write in slope intercept form

Ivanshal [37]

Answer: m=1

Step-by-step explanation:

Use the equation y=y2-y1 over x2-x1

1. label your points

0=x1

-2=y1

-3=x2

-5=y2

The first pair is x1 and y1 and the next pair is x2 and y2

plug in the numbers to find your answer

8 0

2 years ago

Which number is in the solution set of the inequality 4x + 4 > 36

nata0808 [166]

Step-by-step explanation:

4x > 36-4

4x > 32 (divide both sides of the inequality by 4 )

4x ÷ 4 > 32 ÷ 4

x > 8

5 0

3 years ago