State whether the collection is well-defined or not well-defined.
{N | N is a cheerful man}

The midpoints of the sides of the large square are joined to form a smaller square. what is the area of the smaller square

Finding tbe values of the variables in each kite

Convert the number to decimal form. 12) 312five a) 82 b) 30 c) 410 d) 1560 13) 156eight a) 880 b) 96 c) 164 d) 110 14) 6715eight a) 53,720 b) 3533 c) 117 d) 152