Eldar cooks lasagna and spaghetti using pesto sauce. let l represent the number of batches of lasagna and s represent the number of batches of spaghetti that eldar can cook with the amount of pesto sauce he has. 0.9l+0.3s \leq 60.9l+0.3s≤6

Which sum or difference identity would you use to verify that cos (180° - ∅) = -cos ∅? a. sin (α -β) = sin α cos β – cos α sin β b. cos (α -β) = cos α cos β – sin α sin β c. cos (α -β) = cos α cos β + sin α sin β d. sin (α + β) = sin α cos β + cos α sin β

Solve the equation - 2(m -30) = -6m a-15 b-13 c-8 d8

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.