Suppose u · v = 0. Which vectors could represent u and v? a) u = ⟨3, 4⟩ and v = ⟨4, –3⟩
b) u = ⟨3, 4⟩ and v = ⟨–4, –3⟩
c) u = ⟨–3, 4⟩ and v = ⟨4, –3⟩
d) u = ⟨–3, –4⟩ and v = ⟨–4, –3⟩

You are constructing a histogram for scores that range from 70 to 100 in whole points. frequencies range from 3 to 10; that is, every whole-point score between 60 and 100 occurs at least 3 times, and at least one score occurs 10 times. which of these would probably be the best range and size for the score intervals along the x-axis?

Tickets to a science exposition cost $5.75 each for studentd and $7.00 for adults. how many students and adults went if the ticket charge was $42.75

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)