Solve for x 4(2w-1)=-10(w-5)
1 answer:
Hey!
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Steps To Solve:
4(2w - 1) = -10(w - 5)
~Distributive Property
8w - 4 = -10w + 50
~Add 10w to both sides
8w - 4 + 10w = -10w + 50 + 10w
~Simplify
18w - 4 = 50
~Add 4 to both sides
18w - 4 + 4 = 50 + 4
~Simplify
18w = 54
~Divide 18 to both sides
18w/18 = 54/18
~Simplify
w = 3
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Hence, the answer is
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Answer:
The correct answer is 15 cm.
Step-by-step explanation:
Let the width of the required poster be a cm.
We need to have a 6 cm margin at the top and a 4 cm margin at the bottom. Thus total margin combining top and bottom is 10 cm.
Similarly total margin combining both the sides is (4+4=) 8 cm.
So the required printing area of the poster is given by {( a-10 ) × ( a - 8) }
This area is equal to 125 as per as the given problem.
∴ (a - 10) × (a - 8) = 125
⇒ - 18 a +80 -125 =0
⇒ - 18 a -45 = 0
⇒ (a-15) (a-3) = 0
By law of trichotomy the possible values of a are 15 and 3.
But a=3 is absurd as a 4.
Thus the required answer is 15 cm.