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2 years ago

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4 times the measure of the complement of an angle is equal to / the measure of the original angle's supplement. What is the meas

ure of the angle? 18° 48° 72° 108°

1 answer:

WINSTONCH [101]2 years ago

6 0

72 degrees if its 2/3

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Even would be helpful if you just gave me the equation to solve it and I can do the rest. mart had a sale for labor day on DVD's

erastova [34]

x - price of a video tape

y - price of a DVD

$\left\{\begin{array}{ccc}2x+3y=134\\x+5y=179&|\text{subtract 5y from both sides}\end{array}\right\\\\\left\{\begin{array}{ccc}2x+3y=134\\x=179-5y&|\text{substitute to the first equation}\end{array}\right\\\\2(179-5y)+3y=134\qquad\text{use distributive property}\\\\(2)(179)+(2)(-5y)+3y=134\\\\358-10y+3y=134\qquad\text{subtract 358 from both sides}\\\\-7y=-224\qquad\text{divide both sides by (-7)}\\\\\boxed{y=32}\\\\\text{Put the value of y to the second equation}\\\\x=179-5(32)\\\\x=179-160\\\\\boxed{x=19}$

<h3>Answer: video tape cost $19 and DVD cost $32.</h3>

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2 years ago