Answer: 45
Step-by-step explanation:
Complemntary angles result in a sum of 90. So, H=45 means
45+J=90
90-45= 45
5 : 3
D1 = 3km = 3000 m (1km = 1000m)
D2 = 1800m
Ratio of D1:D2
=3000/1800
=1000/600 (dividing by 3)
=10/6 (dividing by 100)
=5/3 (dividing by 2)
= 5 : 3
<span>the prime factorization of 2,520
2 * 2 * 2 * 3 * 3 *5 * 7</span>

So, F(X) = ( X - 5 ) ( Y - 2 )
When you wanna factor out some equation, try to spot things that are similar. Factoring is always a process of trial and error, but as you get more experience it will just get easier.
For example, in your question when you see y appear in many terms try to factor it out, and then produce what goes inside parenthesis.