30b+3= s
It would be thirty students times the number of buses, with an addition of 3 students equal to the total number of students when on the field trip.
I hope this helps!
~cupcake
Step-by-step explanation:
you solve for one of the variable in terms of the 2nd variable in one equation. then you substitute that equation for the variable in the second equation. since it now only has one variable you should be able to solve for the variable.
5:2 and 14:8 are not proportional, 3 to 4 and 24 to 18 are also not proportional, 5:6 and 2:8 are also not proportional, and 7 to 4 and 17.5 to 10 are also not proportional. 7 inches in 9 hours and 42 inches in 54 hours is proportional. 12 players from 21 teams and 15 players from 24 teams are NOT proportional.
Hey there!
Square root of four is positive or negative 2.
So we have:
or 
Add or subtract.
or 
Simplify the absolute value bars.
1 or 5
Hope this helps!
9 15 *The denominator must be the same. 9 4 36
--- + ---- = --- × --- = ----
10 40 10 4 40
36 15 51 *Then simplify.
--- + --- = ----
40 40 40
51 11 * This the answer
--- = 1 ---
40 40
