Write the number 0.21212121 ... as a fraction

Mathematics

1 answer:

julia-pushkina [17]3 years ago

4 0

Answer:

1.91/9

Step-by-step explanation:

x=0.212121212........ .........1 equation

10x=2.12121212......... ........2 equation

1 equation - 2 equation

9x=1.91

x=1.91/9

therefore 0.212121.....=1.91/9

You might be interested in

In AHIJ, h = 38 inches, i = 45 inches and j=61 inches. Find the measure of ZH to the nearest degree.

Paraphin [41]

Answer:

38°

Step-by-step explanation:

Delta math

7 0

3 years ago

What are the answers to 2 and 4

Pavel [41]

2. y = -4x + 1 so slope m = -4

passing thru (3,-1)
y = mx + b
-1 = -4(3) + b
-1 = -12 + b
11 = b or b = 11

answer:
equation: y = -4x + 11

4.
answer is a. -2, 1/2 opposite reciprocal

b. 1/4 , 4 ..... only reciprocal
c. 5, -5..........only opposite

3 0

3 years ago

In a group of 31 pupils, 4 play the flute only. 14 play the piano only. 7 play neither instrument. A student is selected at rand

solmaris [256]

Answer:

probability the student plays both instruments is [ $\frac{6}{31}$ ]