Answer:
2√15=2√5*3
√15/3=√5
5 is not equal to root 5,2√15 is not equal to 5 either
Answer:
-6x+2y=-18 = 
-3x-2y=54 = 
Step-by-step explanation:
I hope I understood this correctly.
"The only way to learn mathematics is to do mathematics."
-Paul Halmos
Answer:
B. 1
Step-by-step explanation:
they only cross at one point... look below
Yes it is true:
(1 - cos^2 x) = sin^2 x Sqr.(1 - cos^2 x) = sin x and (-sinx) True, since sin x negative. Also, x terminates in quadrant 3 and 4. Hope this is helpful