In mathematics, a rational number is any number that can be expressed as a ratio of two integers numbers, being a non-zero denominator.
Answers
-5 is rational because can be writen as -5/1
√11 is irrational because can't be written as a ratio.
2/3 is rational because is a ratio of two integer numbers.
0.5 is rational because can be written 1/2
√16 is rational because can be written 4/1
pi (π) is irrational because can't be written as a ratio
Use the slope-intercept y=mx+b to find slope
Slope=m
M=3
Answer:
the first term is a1
the distance between the numbers is d
we have:
a5 = a1 + 4d = 23
a12 = a1 + 11d = 72
so we have the equation:
a1 + 4d = 23
a1 + 11d = 72
=> a1 = -5
d = 7
=> an = -5 + 7(n - 1) = 7n - 12
with an = 7n - 12
=> a2 = 2
a3 = 9
so the first three terms is -5; 2; 9
Answer:
Step-by-step explanation:
Factorize the left hand side and equate the factors to zero.
Then, use the notation that : sec x = 1/cosx and csc x = 1/sinx
Result: x = ± π3 + 2πk , k∈Z
