exam
Maths Puzzle
Numerical Ability
Jeb has 15 coins. They are all quarters and dimes. He has a total of $2.10. How many dimes does he have?
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exam Other Question
can someone help me? solve the system:
{ x+5y-z=4
{3x+4y+z=4
{ x- y+z=0
I do not understand these questions. thanks for the help.
What is the interval notation forthe interval of real numbers shown in the graph
<----l-------[l--------)l------l-------l-----l--->
-50 -40 -30 -20 -10 0