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3 years ago

Is -20 an irrational number or rational number

Mathematics

2 answers:

maw [93]3 years ago

5 0

It’s a rational number because I saw the other comment so I will just go with that

Gekata [30.6K]3 years ago

3 0

Answer: Rational number

Step-by-step explanation:

Let's write out the properties of rational and irrational numbers.

Rational

Integers
Whole numbers
finite decimals
repeating decimals

Irrational

not rational numbers

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Looking at the list we made, we can say that -20 is a rational number. -20 is an integer and a whole number. Therefore, it is a rational number.

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Answer if u love cats & dogs

eimsori [14]

Answer:

(7, 5.25) lies on the graph.

Step-by-step explanation:

We are given the following values

x = 4, 6, 8, 12 and corresponding y values are:

y = 3, 4.5, 6, 9

Let us consider two points (4, 6) and (6, 4.5) and try to find out the equation of line.

Equation of a line passing through two points $(x_1,y_1)$ and $(x_2,y_2)$ is given as:

$y=mx+c$

where m is the slope.

(x,y) are the coordinates from where the line passes.

c is the y intercept.

Here,

$x_{1} = 4\\x_{2} = 6\\y_{1} = 3\\y_{2} = 4.5$

Formula for slope is:

$m = \dfrac{y_{2}-y_{1}}{x_{2}-x_{1}}$

$m = \dfrac{4.5-3}{6-4}\\\Rightarrow m = \dfrac{1.5}{2}\\\Rightarrow m = \dfrac{3}{4}$

Now, the equation of line becomes:

$y=\dfrac{3}{4}x+c$

Putting the point (4,3) in the above equation to find c:

$3=\dfrac{3}{4}\times 4+c\\\Rightarrow 3=3+c\\\Rightarrow c =0$

So, final equation of given function is:

$y=\dfrac{3}{4}x$

$4y=3x$

As per the given options, the point (7, 5.25) satisfies the equation.

So correct answer is $(7, 5.25)$ .

6 0

3 years ago

Find the Distance between points A and B: A (8, 12) B: (2, 4)

mote1985 [20]

ANSWER-the distance is (6,8)
if you set the equation up from 2-8=6 which is your x value and 4-12=8 is your y value it should also give you your Distance between the two points

4 0

2 years ago

PLEASE HELP PEOPLE!!!!!

Pavel [41]

4 rectangles are 6 x 4

4 triangles are 4x 4

1 square is 6x 6

Area :

6 x 4 = 24 x 4 = 96

1/2 x 4 x 4 = 8 x 4 = 32

6 x 6 = 36

96 + 32 + 36 = 164 square inches.

The answer is A

7 0

3 years ago

Pls Help! Brainliest if you can get it right!

Troyanec [42]

Step-by-step explanation:

90-2x + 3x + 60 = 180

90 + x + 60 = 180

x + 150 = 180

x = 30°

8 0

3 years ago

The length of a rectangle is 9 inches and its perimeter is 48 inches. What is the width of the rectangle?

AnnZ [28]

2x + (2)9 = 48
2x + 18 = 48
Get 2x by itself
2x = 30
x = 15

8 0

3 years ago