Separate the number 21 into three parts so that the second number is twice the first
mumber, and the third number is 4 less than
the second number

What is the difference between the number of adult dogs at the park on monday and tuesday

The general form of the quetion of a circle is ax^2+by^2+cx+dy+e=0 where a=b=0 if the circle has a radius of three units and the center lies on the y axis which set of values of a, b, c, d, and e might correspond to the circle

Afamily has five members. a mom, a dad, two sisters, & a brother. the family lines up single file. what is the probabillity that the mom is at the front of the line