[15 + 1/2 ] - [ 2 + 3/4 ] - [6 + 2/3 ]......convertng these to improper fractions, we have
[31 /2 ] - [11 / 4 ] - [ 20 / 3 ] getting a common denominator (12), we have
[186 / 12] - [33 / 12 ] - [ 80 / 12 ] = 73 / 12 inches = about 6.0833 inches left

//Add 6 to both sides:

//Multiply by -1 on both sides:

Multiply by 3 on both sides:

Divide by 4 on both sides:

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Answer: x = 15 (Answer C)-----------------------------------------
Answer:
60°
Step-by-step explanation:
90°+30°=120°
180°_120°=60°
Answer:
Step-by-step explanation:
The values of the cosine function are represented by the axis OX of the goniometric circumference (circumference centered at the origin and of radius 1). Therefore the cosine is zero for the 90º and 270º angles.