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xxTIMURxx [149]
3 years ago
13

Is 0.7777.... a rational or irrational number and why

Mathematics
2 answers:
xxTIMURxx [149]3 years ago
6 0

Answer:

irrational.

Step-by-step explanation:

0.7777... repeats and does not end so it is irrational

Darina [25.2K]3 years ago
5 0

Answer:

It is rational because it can be expressed as a fraction

Step-by-step explanation:

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Anyone know the answer to this geometry problem?
hoa [83]
Let's talk about the choices
◯  ∠4 and ∠5 . . . . . . . . these are complementary angles whose sum is 90°
◯  ∠7 and ∠9 . . . . . . . . these are vertical angles, equal to each other
◯  ∠2 and ∠3 . . . . . . . . these are supplementary angles that together form a straight line. They are a linear pair.
◯  ∠1 and ∠2 . . . . . . . . these are "adjacent" angles in the quadrilateral that also includes ∠9 and ∠10.

The appropriate choice is ...
  ◉  ∠2 and ∠3
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3 years ago
What is 5pi/4 in degrees
Scilla [17]

5pi/4*180/pi= 225 degree

6 0
3 years ago
1. 3x + x - 2x + 8 = 3x + x
FinnZ [79.3K]

Step-by-step explanation:

1. 3x+x-2x+8=3x+x

x-2x+8=x

x+8=x+2x

8=2x

8÷2=4

x=4

2. 2(2x+4)-2x=x+18

8+4x-2x=x+18

8+2x=x+18

2x=x+10

x=10

3. 2(x+3)+3x

2(5+3)+15

16+15

31

4. 3(2x)-3x+4=2x+5

6x-3x+4=2x+5

3x+4=2x+5

3x-2x+4=5

x=1

5. 3x+2x+x=x+6

6x=x+6

5x=6

x=6/5

6. 2(x+4)+x=16

2x+8+x=16

3x+8=16

3x=8

x=8/3

Hope I calculated it right you can check it in calculator

3 0
3 years ago
Find the equation of the parabola with vertex (1,3) and focus (1/2,3).
daser333 [38]

Answer:

A (y-3)^2 = -2(x-1) is the correct choice :)


4 0
3 years ago
Given a rectangle with side lengths of and , what is its area?
maw [93]
B = 2x+4
H = 3x-5

A = bh
   = (2x+4)(3x-5)
   = (2x)(3x)+(2x)(-5)+(4)(3x)+(4)(-5)
   = 6x^2 - 10x + 12x - 20
   = 6x^2 + 2x - 20

So the answer is A (6x^2 + 2x - 20) (i think)

8 0
3 years ago
Read 2 more answers
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