Consider a group of 20 people. if everyone shakes hands with everyone else, how many handshakes take place?

Find the coordinates of P so that P partitions the segment JK in the ratio 4 to 1 if (-2,5) and K (2, - 3).

Simplify this expression n-10+9n-3

How do I solve the following (step by step) ? x²+3x+2 · x²-6x+5 x-3x-10 x²+8+7

If Susie is 14, what was her age x years ago? x - 14 14 - x 14x

Is 18,000 g greater than 10 kg

5x-5 + (6y-4) + 4x+10=180

Does the fraction 1/2 make the equation 1/34 + 8/17 = 1/2 true?

Remember that you can multiply by the reciprocal of the divisor when you divide by a fraction. find each quotient. simplify if possible 1. 1/3:2 2. 1/7:7 3. 1/2:8 4. 1/8:2

Draw a area model to solve the following. Find the value of the following expression. 30 * 60

15 nickels are stacked vertically how many inches tall is the stack