Set up proportion 3/4 = S/S+15
4s = 3s + 45
subtract 3s from both sides
s=45
You can check by taking Seth's height of 45 over Jack's height of 60 (45+15).
And reduce the fraction to 3/4 or a ratio of 3:4.
I'm not sure what you did at first, but here's how I solved it:
7(3+3)-9
7(6)-9
42-9
=33
i can't see your original answer, so i can't tell you specifically what went wrong, but i hope that helps!
Answer:
2
/5
Step-by-step explanation:
Answer:
42.6 ft
Step-by-step explanation:
APEX
Answer:
3a/2 + 2 or (3a + 4) / 2
Step-by-step explanation:
The least of three consecutive numbers is a and the greatest is z. This means that z is 2 more than a:
z = 2 + a
We want to find the value of (a + 2z) / 2 in terms of a, that is:
(a + 2(a + 2)) / 2
= (a + 2a + 4) / 2
= (3a + 4) / 2
= 3a/2 + 2
