Evaluate 3(a+b) for a=− 1/2 and b=2 1/2 . Record the answer in the simplest way.

Pick the description of a geometric object that best matches the real world object box for a deck of card

Which mathematical statements are true? 1) if 3 is an odd number, then 3 times 3 is an even number. 2) if 6 is less than 7, then 4 is greater than 7. 3) six is divisible by 3, and 10 is a multiple of 2. 4) the average of the data is greater than the largest value in the data, or it’s less than the largest value in the data. 5) the slope of a linear graph is its rate of change, and the graph’s y-intercept is the initial value. 6) if an equilateral triangle has equal angles, then all its angles will measure 45°.

For the equations below which statement is true ? -2x=14 6x=-42