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PtichkaEL [24]
2 years ago
8

Can someone please help me I need 7 and 8​

Mathematics
1 answer:
exis [7]2 years ago
4 0

Answer:

7.irrational

8.integer ,whole number ,rational number

Step-by-step explanation:

7. that dash line on top of decimal shows that its keeps repeating

8. -18/6 = -3

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A radioactive compound with mass 470 grams decays at a rate of 3% per hour. Which
xxTIMURxx [149]

After 6 hours the radioactive compound with mass 470 grams becomes 391.49 grams and the equation will be C is equal to 470(1-0.03)^6.

<h3>What is exponential decay?</h3>

During exponential decay, a quantity falls slowly at first before rapidly decreasing. The exponential decay formula is used to calculate population decline and can also be used to calculate half-life.

We know the decay can be as:

\rm C = a(1-r)^t

We have:

a = 470 grams

r = 3% = 0.03

t = 6 hours

\rm C = 470(1-0.03)^6

C = 391.49 grams

Thus, after 6 hours the radioactive compound with mass 470 grams becomes 391.49 grams and the equation will be C is equal to 470(1-0.03)^6.

Learn more about the exponential decay here:

brainly.com/question/14355665

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3 0
1 year ago
There are two pencils.One is 14 cm long,the other is x cm if x=10, what is the total length of the two pencils​
Crank

Answer:

It began after the stock market crash of October 1929, which sent Wall Street into a panic and wiped out millions of investors. Over the next several years, consumer spending and investment dropped, causing steep declines in industrial output and employment as failing companies laid off workers.

7 0
3 years ago
The table below summarizes the number of children per household for a sample of 29 families
atroni [7]
Can you please provide a photo so I can help you?
6 0
3 years ago
A worker at a landscape design center uses a machine to fill bags with potting soil. Assume that the quantity put in each bag fo
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Answer:

Mean = 15.15

Standard deviation = 0.6062

Step-by-step explanation:

We are given a uniform distribution of  quantity to be put in each bag.

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b) Standard Deviation:

\sigma = \sqrt{\displaystyle\frac{(b-a)^2}{12}}\\\\= \sqrt{\dfrac{(16.2-14.1)^2}{12}} = \sqrt{0.3675} = 0.6062

4 0
2 years ago
Y=1/4x interpret the slope
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Answer:

Step-by-step explanation:

well you start at origin 0 because there is no y-intercept so you would do rise over run up 1 over 4, 1/4 is your slope

5 0
3 years ago
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