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valkas [14]
3 years ago
15

0.7x+6=0.3(4x+6)−2x

Mathematics
2 answers:
Gelneren [198K]3 years ago
8 0

Answer: x=-2.8

Step-by-step explanation:

Given the following equation:

0.7x+6=0.3(4x+6)-2x

You can follow these steps in order to solve for "x" and find its value:

1. Apply Distributive property on the right side of the equation:

0.7x+6=0.3(4x+6)-2x\\\\0.7x+6=1.2x+1.8-2x

2. Subract 0.7x from both sides and add the like terms:

0.7x+6-(0.7x)=1.2x+1.8-2x-(0.7x)\\\\6=-1.5x+1.8

3. Subtract 1.8 from both sides:

6-(1.8)=-1.5x+1.8-(1.8)\\\\4.2=-1.5x

4. Finally, divide both side of the equation by -1.5:

\frac{4.2}{-1.5}=\frac{-1.5x}{-1.5}\\\\x=-2.8

MakcuM [25]3 years ago
3 0

Answer:

x=-2.8

Step-by-step explanation:

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Step-by-step explanation:

Data:

  t = y - 2007

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Part 1. Calculate c₃

c₃ = c₀(1 - 0.23) = 0.77c₀

Part 2. Calculate r

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The explicit decay model is c = 8.14 million×(0.9166)^t

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Step-by-step explanation:

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