2 years ago

Please help me solve this in class rn

Mathematics

1 answer:

oksian1 [2.3K]2 years ago

4 0

The grinch mountain was the answer

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IrinaVladis [17]

Answer:

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Step-by-step explanation:

3 x a x 2 x b

= 3 x 2 x a x b ( because multiplication is commutative, which basically means you can move the numbers and variables anywhere in the expression).

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3 years ago

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Step-by-step explanation:

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3 years ago

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sergiy2304 [10]

Answer: r = -0.14

<u>Step-by-step explanation:</u>

$K=K_o\cdot e^{rn}\quad \text{where;}\\\bullet K\ \text{is the final amount of Kristinite}\\\bullet K_o\ \text{is the initial amount of Kristinite}\\\bullet r\ \text{is the rate of decay}\\\bullet n\ \text{is the number of seconds the decay has occurred}\\\\\\\text{Given:}\\\\K: \dfrac{1}{2}K_o\\\\r: unknown\\\\n: 2\\\\\\K=K_o\cdot e^{rn}\\\\\\\dfrac{1}{2}K_o=K_o\cdot e^{r(5)}\\\\\\\dfrac{1}{2}=e^{5r}\\\\\\ln\dfrac{1}{2}=5r\\\\\\\dfrac{ln\dfrac{1}{2}}{5}=r\\\\\\-0.14=r\\$