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3 years ago

8

how many kilometers he has run to prepare for a marathon. The app said he ran 9.654 kilometers. He wants to post online how many

miles he ran. Mark ran ___ miles. (1 mile = 1.609 kilometers)

1 answer:

Mashcka [7]3 years ago

3 0

6 miles, 9.654 divided by 1.609

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Yakvenalex [24]

Answer:

x= -1 or x = -2

Step-by-step explanation:

Your equation:

(x−3)^3−(x−1)^3+7x^2=7(3x−4)

Step 1: Simplify both sides of the equation.

x^2+24x−26=21x−28

Step 2: Subtract 21x-28 from both sides.

x^2+24x−26−(21x−28)=21x−28−(21x−28)

x^2+3x+2=0

Step 3: Factor left side of equation.

(x+1)(x+2)=0

Step 4: Set factors equal to zero.

x+1=0 or x+2=0

which equals to x=−1 or x=−2

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3 years ago

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Nostrana [21]

Answer:

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Step-by-step explanation:

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First turn everything into an improper fraction.

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To divide fractions we multiply by the flipped version of the fraction, or the reciprocal.

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Whitepunk [10]

Answer:

x=23

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Step-by-step explanation:

7x+x-4=180

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