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2 years ago

14

Clair wants to hang a mirror that is 18.5 inches wide in the center of a wall that is 31 inches . How far from each corner shoul

d the mirror be to be centered

1 answer:

S_A_V [24]2 years ago

6 0

It would be 1.675 inches away from each corner.

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A necklace and earrings cost $144. Six necklaces and five pairs of earrings cost $825

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Step-by-step explanation:

let necklace : x

let earrings : y

x+y=144 -1st eqn

6x+5y=825 -2nd eqn

y=144-X -3rd eqn

substitute eqn into 2nd eqn

6x+5(144-x)= 825

6x +720-5X =825 (expanded)

X = 825-720

X =105

substitute "X=105" into 1st eqn

(105)+y=144

y= 144-105

y=39

1 necklace = 105$

1 pair of earrings = 39$

(to check back: substitute the value into the original eqn)

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