Is 3.2 irrational or rational?

Mathematics

2 answers:

Keith_Richards [23]3 years ago

8 0

3.2 is a rational number

Levart [38]3 years ago

6 0

Answer:

rational

Step-by-step explanation:

A rational number has the form

$\frac{x}{y} \frac{a}{b}$ ← where a and b are integers

3.2 = $\frac{32}{10}$ ← a rational number

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Adam has sticks of the following lengths: (3x+4) (2x+10) (x+12)cm

gladu [14]

Option I
(3x+4)cm =(2x+10)cm
3x-2x=6
x=6
Option II
(3x+4)= (x+12)
3x-x=12-4
2x=8
x=4
Option III
(2x+10)= (x+12)
2x-x=12-10
x=2

3 0

4 years ago

Read 2 more answers

How do I solve this

Lerok [7]

The speed of the plane will be 200 knots.

You do 800/4 because you are trying to find the speed of the airplane.

If you take the speed of the plane and divide the distance by the speed and then followed by the 5 and 4, you will get 800/200/4/5

800/200
=400

400/4
=100

100/5
=20

The speed of the wind is 20 knots.

5 0

3 years ago

if A(-2,1), B(1,5), C(4,4), D(1,0) are the vertices of a quadrilateral, do the points form a parallelogram? Justify your answer.

4vir4ik [10]

We have that

<span>A(-2,1), B(1,5), C(4,4), D(1,0)
</span>using a graph tool
see the attached figure

we know that
A parallelogram is a simple quadrilateral with opposite sides parallel and equal in length
therefore
<span>let's calculate the slope and distance of each side and compare them
</span>
side AB
slope m=(y2-y1)/(x2-x1)------> m=(5-1)/(1+2)----> m=4/3
distance AB=√4²+3³-------> dAB=5 units

side CD
slope m=(y2-y1)/(x2-x1)------> m=(0-4)/(1-4)----> m=4/3
distance CD=√4²+3³-------> dCD=5 units

side BC
slope m=(y2-y1)/(x2-x1)------> m=(4-5)/(4-1)----> m=-1/3
distance BC=√1²+3³-------> dBC=√10 units

side AD
slope m=(y2-y1)/(x2-x1)------> m=(0-1)/(1+2)----> m=-1/3
distance AD=√1²+3³-------> dAD=√10 units

(side BC and side AD are parallel) and (side BC=side AD)
and
(side AB and side CD are parallel) and (side AB=side CD)

therefore

the answer is
Yes, it is a parallelogram