Dough rowed 31/2 miles in 1/2 hour what is the average speed in miles per hour?

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

In the following diagram it is given that dec,ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2

What expression is equivalent to log3(x+4)