7. Which number is an irrational number?
a) Square Root 3 (i can't make the symbol)
b) - 13.5
c) 7/11
d) 1 over square root 9 (can't make the symbol)
My Answer - D
Am I correct?
My answer would be a) sqrt (3)
b) 27/2
c) 7/11
d) 1/3
all rational because written as ratios of whole numbers.
oh yeah that make sense because square root of 3 are non-perfect squares and non-perfect squares are irrational
thank you
Yes, you are correct. The number "1 over square root 9" is an irrational number.
To determine if a number is irrational, we need to check if it can be expressed as a fraction (a/b), where both a and b are integers (whole numbers) and b is not equal to zero.
Option a, the square root of 3 (√3), is an irrational number because it cannot be expressed as a fraction. The square root of 3 is a non-repeating, non-terminating decimal.
Option b, -13.5, is a rational number because it can be expressed as a fraction (-27/2).
Option c, 7/11, is also a rational number because it is a fraction with both 7 and 11 being whole numbers.
Option d, 1 over square root 9 (1/√9), is equal to 1/3, which is a rational number. So, option d is not an irrational number.
Therefore, the correct answer is option a, Square Root 3 (√3), which is an irrational number.