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1 year ago

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How to do [7^{6} * (2/7)^{5}] ÷ (2^{2}). FIRST TO ANSWER WILL BE MARKED AS BRAINLIEST/

1 answer:

Allisa [31]1 year ago

5 0

Answer:

56

Step-by-step explanation:

7⁶ = ~117,649

(2/7)⁵ = ~0.0019

2² = 4

~117,649 x ~0.0019 = 224.

224 / 4 = 56

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2 years ago

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How many points are shared by concentric circles?

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Answer:

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Step-by-step explanation:

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3 years ago

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The lifetime of a certain type of battery is normally distributed with mean value 15 hours and standard deviation 1 hour. There

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Answer:

If the lifetime of batteries in the packet is 40.83 hours or more then, it exceeds for 5% of all packages.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 15

Standard Deviation, σ = 1

Sample size = 4

Total lifetime of 4 batteries = 40 hours

We are given that the distribution of lifetime is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

Standard error due to sampling:

$\displaystyle\frac{\sigma}{\sqrt{n}} = \frac{1}{\sqrt4} = 0.5$

We have to find the value of x such that the probability is 0.05

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3 years ago

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3 years ago

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In the formula A(t) = A0ekt, A(t) is the amount of radioactive material remaining from an initial amount A0 at a given time t an

Alenkasestr [34]

Answer: 693 years

Step-by-step explanation:

Expression for rate law for first order kinetics is given by:

$A(t) =A_0e^{kt}$

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