To solve, use properties of logs, specifically log(u)+log(v)=log(uv). This makes your equation logb(x+1)+logb(x-8)=logb((x+1)(x-8)), which can be made into logb(x^2-7x-8) by expanding the factored form.
1)
Australia
4 consonants (s, t, r, l)
5 vowels (a, u, a, i, a)
consonants : vowels = 4 : 5
2)
123446789
4 odd digits (1, 3, 7, 9)
5 even digits (2, 4, 4, 6, 8)
odd digits : even digits = 4 : 5
3)
Elizabeth
5 consonants (l, z, b, t, h)
4 vowels (e, i, a, e)
consonants : vowels = 5 : 4
4)
234567899
5 composite digits (4, 6, 8, 9, 9)
4 prime digits (2, 3, 5, 7)
composite digits : prime digits = 5 : 4
The situations that have a ratio of 4:5 are: consonants to vowels in the name Australia and odd digits to even digits in 123446789.
Answer:
4x-3y=5
Step-by-step explanation:
Answer:
f(x) = x^2 ( x -4i) (x+4i)
Step-by-step explanation:
f(x) = x^4 + 16x^2
Factor out x^2
f(x) = x^2 ( x^2 +16)
f(x) = x^2 ( x^2 - -16)
The square root of -16 is 4i and -4i
Using the difference of square (a^2 - b^2) = (a-b)(a+b)
f(x) = x^2 ( x -4i) (x+4i)
18/48 is one, to get more get a calculator and multiply them both by 2