4 years ago

5 points How would you describe the lines represented by railroad tracks?explain

1 answer:

7 0

Parallel mostly. Since the two metal beams of a train tracks never meets, they'll stay apart forever. hope that helps ya!

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Sophie [7]

Answer: 16 g

Step-by-step explanation:

We can solve this with the Radioactive Half Life Formula:

$A=A_{o}.2^{\frac{-t}{h}}$

Where:

$A$ is the final amount of radioactive calcium

$A_{o}=64 g$ is the initial amount of radioactive calcium

$t=10 days$ is the time elapsed

$h=5 days$ is the half life of radioactive calcium

Solving with the given data:

$A=(64 g)2^{\frac{-10 days}{5 days}}$

$A=16 g$ This is the amount of radioactive calcium left

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4 years ago

larisa86 [58]

Answer:

Step-by-step explanation:

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kherson [118]

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____ [38]

Use the distributive property.

4(4a + 5) = 4 * 4a + 4 * 5 = 16a + 20

Answer: 16a + 20

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Gala2k [10]

6a² + 7ax - 3x²
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(3a - x)(2a + 3x)

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4 years ago