A triangular windowpane is 4 feet 8 inches wide and 3 feet 6 inches high. What is the area of the windowpane? If necessary, round to the
nearest tenth
A
about 72 ft2
B. about 98 ft?
c. about 8.2 ft?
D. about 8.6 ft?

δabc ≅ δdcb by sas because

db ≅ ac . . given (side)

bc ≅ bc . . reflexive property (side)

∠dbc ≅ ∠ acb . . alternate interior angles where transversal bc crosses parallel lines bd and ac (included angle)

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

$649.60

step-by-step explanation:

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