In 2009, two tickets to a Certain American band's concert and two tickets to a certain British band's concert cost, on average, a total of $556. At those prices, four tickets to see this American band and two tickets to see this British band cost $798. What was the average cost of these American and British band tickets in 2009?

x = 10.1

step-by-step explanation:

all of the angles of a tirangle add up to 180º

180 - 65 = 115 (since we already know the value of one angle)

(2x + 7) + (8x + 7) = 115

(combins like terms) 10x + 14 = 115

(isolate the variable subtract 14 from both sides): 10x = 101

(find the variable divide both sides by 10): x = 101/10

x = 10.1

nothjing

step-by-step explanation:

so far i think you have the right thing going for you just remember soh cah toh

step-by-step explanation:

sine over hypotenuse

cosine   equals adjacent

tangent over hypotenuse

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step-by-step explanation: