Use vectors to decide whether the triangle with vertices p (1,-3,-2), Q (2,0,4), R (6,-2,-5) is right-angled.

6. Petra is given the equation (x-15) ^2 + (y+4) ^2=100 and identifies its graph as a circle whose center is (-15,4) and radius is 10. Has Petra made a mistake? Explain.

Kevin and Randy Muise have a jar containing 76 coins, all of which are either quarters or nickels. The total value of the coins in the jar is $13.60. How many of each type of coin do they have?

X+y/3 = 5 solve for x

Krystal is comparing two internet service plans. Plan 1 cost $34.99 per month. Plan 2 costs 134.97 every three months. If Krystal plans to stay with one service plan for 1 year, which should she choose? How much will she save?

Are 4.7 and 4.70 equivalent?

Austins allowance is $15 per week. he spends $4 each week in baseball cards how much money will Austin have at the end of 12 weeks

What plus 32 equals 88

Chandler is walking one-sixteenth kilometer every 10 minutes. How many kilometers will he walk in 1 hour?

Given the box plot, will the mean or the median provide a better description of the center? box plot with min at 6, Q1 at 7.5, median at 8, Q3 at 23, max at 32.5

There are 3 men and 7 women in room a and 6 men and 3 women in room b. one random person from room a moves to room b. then a person comes out of room b. what is the probability that the person from room b is a woman?