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Mathematics 8 Online
OpenStudy (anonymous):

math help!

OpenStudy (anonymous):

@SolomonZelman

OpenStudy (anonymous):

c

OpenStudy (anonymous):

\[\sqrt{a}*\sqrt{b}=\sqrt{ab} \] where\[a \ge 0, b \ge0\]

OpenStudy (anonymous):

OpenStudy (anonymous):

@SolomonZelman

hartnn (hartnn):

period of y = A sin (wx) is \(T = \dfrac{2\pi }{w}\) here w =1

OpenStudy (anonymous):

would my answer be B?

hartnn (hartnn):

if you plug in w=1 you get period = 2pi

OpenStudy (anonymous):

oo I did something wrong thanks! are you good with graphs

hartnn (hartnn):

i can try

OpenStudy (anonymous):

hartnn (hartnn):

the curve goes from -4 to 4 and here amplitude is calculated as , (4 -(-4))/2 = 4

OpenStudy (anonymous):

so the answer would be D?

hartnn (hartnn):

answer is 4

OpenStudy (anonymous):

can you help with one more graph

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