A rational and an irrational number between 3.99 and 4

Mathematics

2 answers:

JulijaS [17]3 years ago

7 0

Step-by-step explanation:

Rational = 3.995

Irrational = 3.991991199111991111....

Naddik [55]3 years ago

5 0

The rational numbers would be 3.99 and 4 while there are no irrational number. A rational number is a number that can be written as a fraction for 3.99 it can be written as 399/100 and its the simplest form of the fraction. Also, 4 is a rational number since it can be written as 4/1 which is a fraction.

You might be interested in

All together, 3 people have 120 coins. mark has 3 times as many as joel, and joel has 1/2 as many as sandra. how many coins does

oksano4ka [1.4K]

Joel = j, Mark = m, Sandra = s
j + m + s = 120
m = 3j
j = 1/2 s --> s = 2j
plug in (substitute) each letter to make it in terms of only j: j + m + s = 120
j + 3j + 2j = 120
6j = 120
6j/6 = 120/6
j = 20
now plug in for the j & s equation:
s = 2j = 2(20) = 40
Therefore Sandra has 40 coins!

7 0

3 years ago

Help !!!!

svp [43]

The mean of the data is 11

now we find the difference between the mean and each number
1, 2, 3, 0.5, 0.25, 1.25, 1.

now we square the numbers
1, 4, 9, 0.25, 0.0625, 1.

now we find the mean of the new numbers
which is 2.1875

2.1875 is your standard deviation.

6 0

3 years ago

How do the lateral and total surface area of a cylinder differ ?

vichka [17]

The lateral surface area of a cylinder is just the long side connecting the bases, whereas the total surface area includes both the lateral surface area and area of the two circular bases.

$SA_l_a_t=2 \pi rh$ (Imagine a rectangle with the circumfrence of the base as one side and the height as the other being folded around)

$SA = 2 \pi rh + 2 \pi r^2$ (Plus the area of two circles)

The literal difference between surface areas would be the two bases 2πr² if you need that.

8 0

3 years ago

What is the measure of each exterior angle for a regular polygon with 4 sides?

Yakvenalex [24]

A 90

In a regular shape all of the sides an angles are the same
360/4=90

3 0

2 years ago

Read 2 more answers

A boat leaves the dock and travels 9 miles due south, then 12 miles due west.

loris [4]

The answer would be A. 15mi

4 0

3 years ago