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Marat540 [252]
3 years ago
10

What is 20 increased 30%.

Mathematics
1 answer:
Reptile [31]3 years ago
5 0
<span>When 20 is increased by 30% of itself 

</span><span>When 20 is added to by (30% OF 20)
</span><span>
20 + (30% x 20)

</span><span>20 + (0.3 x 20) 
</span><span>
20 + (6) 

</span>26
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-8y-2(5y+9)<br> can yall help me!!!!!!!!!!!!<br> it is 10 points
My name is Ann [436]

Answer:

-18y - 18

Step-by-step explanation:

The -2 needs to be distributed into both values in the parenthesis. This will make the equation -8y - 10y - 18. Then, you put the like terms together. This will result in the final equation, -18y - 18

5 0
3 years ago
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.

5 0
2 years ago
Could some help me thanks
dezoksy [38]

You are given 2/3 angles to solve for x;

24+56 = 90

90 + x = 180

x = 90 degrees

3 0
3 years ago
Find 1 rational number between -2/9 and 0
sergey [27]

Answer:

Touch and hold a clip to pin it. Unpinned clips will be deleted after 1 hour.

8 0
2 years ago
What are the values for y when x is 1, 3, and 5?<br> y = 3x + 10
Ivan
When x=1 y=13 when x=3 y=19 and when x=5 y=25 you just plug the numbers in for x and solve
5 0
2 years ago
Read 2 more answers
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