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aleksklad [387]

2 years ago

5

A toy car that is 0.12 m long is used to model the actions of an actual car that is 6 m long. which ratio shows the relationship

between the sizes of the model and the actual car?
a. 50:1
b. 1:50
c. 5:1
d. 1:5

1 answer:

GREYUIT [131]2 years ago

7 0

Answer:

its b) 1:50 just did it on apex

Explanation:

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3 years ago

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3 years ago

Read 2 more answers

If you have 10.0 g of a substance that decays with a half-life of 14 days, then how much will you have after 42 days?

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The formula for the mass that remains:
$m=m_0 \times (\frac{1}{2})^\frac{t}{T}$
m₀ - the initial mass, t - time, T - the half-life

$m_0=10 \ g \\
T=14 \ d \\
t=42 \ d \\ \\
m=10 \times (\frac{1}{2})^\frac{42}{14}=10 \times (\frac{1}{2})^3=10 \times \frac{1}{8}=10 \times 0.125=1.25$

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2 years ago