Word Problems Flashcards
1
Q
Picking variable
A
Pick variables the represent numbers
2
Q
Age Questions
A
Now and Later; pick the variable for now
3
Q
Two travelers opposite direction
A
Sum of speeds:
Towards each other- shrinking; Away: expanding
4
Q
Two travelers moving in same direction (big-small)
A
Difference of speeds; faster in front: expanding; faster behind: shrinkingq
5
Q
Shrinking/expanding
A
one equation for gap; can add gaps if gaps are the same
6
Q
A
A
RT
7
Q
Rab=
A
Ra+Rb
8
Q
Solute/
A
Solute+Solvent
9
Q
Venn
A
only! regions add
10
Q
Sum of sequences
A
n(n+1)/2 any evenly spaced pair of numbers; have to find the number of pairs
