-27 can be rewritten as -3 * -3 * -3
So the 3rd root of -27 is -3.
(You can check on the calculator to make sure as well)
Answer:
A = 0.65
B = 3.304
C = 6.07
Step-by-step explanation:
You have to subtract to the final result the initial one and divide it for the number of segments. Then, for every segment you add the number you found, for example:
Value of a segment:
Value of A:
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Given information
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3 bags + 4 pens = $950
4 bags + 3 pens = $1150
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Form the 2 equations
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Let x be the cost of 1 bag.
Let y be the cos of 1 pen.
3x + 4y = 950
4x + 3y = 1150
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Solve for x and y
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3x + 4y = 950 -------------- (1)
4x + 3y = 1150 ------------- (2)
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Equation (1) x 4
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12x + 16y = 3800 ------------- (1a)
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Equation (2) x 3
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12x + 9y = 3450 ------------- (2a)
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Equation (1a) - (2a)
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(12x + 16y) - (12x + 9y) = 3800 - 3450
7y = 350
y = 350 ÷ 7
y = 50
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Substitute y = 50 into equation (1)
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3x + 4 (50) = 950
3x + 200 = 950
3x = 950 - 200
3x = 750
x = 250
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Find cost of a bag and a pen
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Bag = x = $250
Pen = y = $50
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Answer: The bag cost $250 and the pen cost $50
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Answer:
B
Step-by-step explanation:
you have to divide each of these numbers to get the next answer. Hope that this helps you and have a great day :)
