Part a: using complete sentences, explain how to convert zero point 22 repeating to a fraction. (2 points)

part b: is zero point 22 repeating times square root of 112 end square root rational or irrational? justify your answer. (2 points)

a)

b) Irrational

Step-by-step explanation:

a) Let

Then

Subtract (a) from (b)

b) From part a) is a rational number but is an irrational number.

But is not a rational number because the product of a rational number and an irrational number is an irrational number.

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

i can you with this answer

step-by-step explanation: