HELP TIMED QUESTION!!plss The quadratic function f(x)= x^2 has __

A. No zeros
B. Exactly one zero
C. Exactly two zeros
D. More than two zeros

What basic trigonometric identity would you use to verify that sin x cos x tan x =1-cos^(2)x?

Read the following two statements. then use the law of syllogism to draw a conclusion. if the tv is too loud, then it will give me a headache. if i have a headache, then i will have to rest.

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?