a wholesaler has $75,000.00 to spend on certain model's of tv set's and vcr's. If the tv set's may be obtained at $375 each and the vcr's at $215 each, write an inequality that restrict's the purchase of x (tv's) and y (vcr's).

On a piece of paper graph f(x)=5•(0.4)^x

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

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