I can answer 18 for you, but I don't understand 16
18. Since when we lose 3 girls the ratio for the girls side drops by 1, that tells us that 1 digit equals 3 people.
a) 5*3=15 so our answer is 15 girls.
b) 4*3=12 and 5*3=15 so 15+12, our answer would be 27
If the last one is supposed to be 7(8+3), it would be equivalent to 56+21
The answer is C: 5/12
Tangent= opposite side/adjacent side
Opposite side of H=5
Adjacent side of H=12
Tangent of Angle H= 5/12
Hope this helped!
Yes they are similar because all corresponding sides share the scale factor of 1.2. I hope this makes sense like it does in my head :)
