There are 7 people at a party. Each person must shake hands with all the other people at the party once. How many handshakes does it take to do this?

The opening balance of one of the 31-day billing cycles for Lorenzo's credit card was $4100, but after 15 days Lorenzo made a payment of $2300 to decrease his balance, and it stayed the same for the remainder of the billing cycle.

What is the value of n if 23.2 x n = 2,320

150 of is the same as. 1 of what number

If 5/8 of the people in water aerobics class are over age 65 and 1/4 of the people in the class are under age 40, what fraction of the people in the class are either over 65 or under 40?

If the quotient of two integers is positive, what do you know about he signs of the two integers

A student claims that 8^3 •8^-5 is greater than 1 ...

Compute the probability of event E if the odds in favor of E are (A) StartFraction 20 Over 27 EndFraction (B) StartFraction 25 Over 18 EndFraction (C) StartFraction 19 Over 15 EndFraction (D) StartFraction 21 Over 8 EndFraction

Find the radius circumference = 12.6yd

If 3^x=5^y=75^z, show that z=xy / (x+y).

Two angle of a quadrilateral is 90 degree and 100 degree. the remaining two angles are equal. calculate the size of each remaining angle.