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lbvjy [14]
3 years ago
10

Help with this problem thankyou ​

Mathematics
2 answers:
xxMikexx [17]3 years ago
8 0

Answer:

2b^{2} + 5

Step-by-step explanation:

Combine like terms:

5b^2 minus 3b^2 equals 2b^2

2 plus 3 equals 5

Put the two numbers together:

2b^2 + 5

sergiy2304 [10]3 years ago
5 0

Answer:

the first choice

Step-by-step explanation:

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One year the population of the city was 117000 serval years later it was 136,90 find the percent increase
Reptile [31]

Answer:

17%

Step-by-step explanation:

The initial value was 117,000

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3 years ago
The brain volumes ​(cm cubed​) of 20 brains have a mean of 1162.8 cm cubed and a standard deviation of 127.1 cm cubed. Use the g
Free_Kalibri [48]

Answer:

- The limits are  908.6 cm^3 and 1417cm^3

- 1337.0cm^3 is in between the limits

Step-by-step explanation:

To determine the limit by taking into account the range rule of thumb, you use the fact that the limits are given by the mean plus and minus twice the standard deviation, that is:

\overline{x}\pm 2\sigma        (1)

\overline{x}: mean of brain volume = 1162.8 cm^3

σ: standard deviation = 127.1 cm^3

You replace the values of the parameters in the equation (1):

1162.8cm^3+2(127.1cm^3)=1417cm^3\\\\1162.8cm^3-2(127.1cm^3)=908.6cm^3

Limits = (1417 , 908.6)

The limits are  908.6 cm^3 and 1417cm^3

1337.0cm^3 is in between the limits calculated above.

5 0
3 years ago
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