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2 years ago

Model this equation using a visual model. 4x + 8.46 = 2x + 15.62

Mathematics

1 answer:

Varvara68 [4.7K]2 years ago

8 0

I will clarify you
Soln:-
Or,4x-2x=15.62-8.46
Or,2x=7.16
Or,x=7.16/2
Or,x=3.58

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Express it in scientific notation.

TEA [102]

Multiplying the values given above we obtain a value of 0.01386. In scientific notation, 1.386 x 10^-2. The significant figures of a number are digits that carry meaning contributing to its measurement resolution. From the multiplicand and the multiplier, the least number of significant significant figure would be one. Therefore, we write as

1.0 x 10^-2

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3 years ago

Read 2 more answers

When studying radioactive material, a nuclear engineer found that over 365 days,

Gnom [1K]

Answer:

a) The mean number of radioactive atoms that decay per day is 81.485.

b) 0% probability that on a given day, 50 radioactive atoms decayed.

Step-by-step explanation:

Poisson distribution:

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

$P(X = x) = \frac{e^{-\lambda}*\lambda^{x}}{(x)!}$

In which

x is the number of sucesses

e = 2.71828 is the Euler number

$\lambda$ is the mean in the given interval.

a. Find the mean number of radioactive atoms that decayed in a day.

29,742 atoms decayed during 365 days, which means that:

$\lambda = \frac{29742}{365} = 81.485$

The mean number of radioactive atoms that decay per day is 81.485.

b. Find the probability that on a given day, 50 radioactive atoms decayed.

This is P(X = 50). So

$P(X = 50) = \frac{e^{-81.485}*(81.485)^{50}}{(50)!} = 0$

0% probability that on a given day, 50 radioactive atoms decayed.

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2 years ago

Which of the following is not equivalent to 1/25?

taurus [48]

The answer is D. 5^-2 times 5^4.

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3 years ago

A company pays a bonus to four employees A, B, C, and D. A gets four times as much as B. B gets 50% of the amount paid to C. C a

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Answer:

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Step-by-step explanation:

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3 years ago