Determine the length of side CB

C) 5√3

Step-by-step explanation:

To find the length of sides CB, use the tan of 30 degrees.

tan 30 = 5/x       Simplify

0.577 = 5/x        Divide both sides by 0.577

x = 8.66 or 5√3

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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

b.

step-by-step explanation:

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