Show that the sum, over the set of people at a party, of the number of people a person has shaken hands with, is even. assume that no one shake his or her own hand.

Which expression is equivalent to (3b + 2r) + (4b + r)

The vertices of ∆ABC are A (-2, 2), B (6, 2), and C (0, 8). What is the perimeter of ∆ABC in units?

Y varies directly with x, and y = 9 when x = 2. What is the value of y when x = 3? Enter your answer in the box.

1. Jessica wrote the number 8.06 x 10-3 in standard form. Which number did she write? A 0.00806 C 0.0806 B 0.0086 D 8,060

How is division like subtraction

4.92 divide (0.8-0.12 divide. 0.3

The measures of a triangle are in the extended ratio 4:5:6. what is the measure of the smallest angle? A. 48 B. 60 C. 72 D. 12

Is 5 m, 7 m, 11 m a right triangle

Which expression represents the volume, in cubic units, of the composite figure? Pi (52) (13) - One-third pi (52) (12) Pi (52) (13) - One-third pi (52) (25) Pi (52) (13) + One-third pi (52) (12) Pi (52) (13) + One-third pi (52) (25)

An 18-inch cylindrical cake roll with a radius of 4 inches has been cut into 8 identical pieces. What is the volume of each piece of cake? Select one: O 28872 O 36tin O 12tuin O 14411n