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3 years ago

Find the volume of a sphere with a radius of a 5 m. remember that the volume of a sphere is 4/3πr3

1 answer:

3 0

Plug 5 for r in the formula for the volume of the sphere:
V = (4/3)(pi)(r^3)
V = (4/3)(pi)(5^3)
Use a calculator to solve:
Should be about 523.59878 meters.

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A botanist measures the heights of 16 seedlings and obtains a mean and standard deviation of 72.5 cm and 4.5 cm, respectively. F

Brums [2.3K]

Answer:

c. [70.30, 74.70]

Step-by-step explanation:

Confidence interval is a range of values in which there is a specified probability that the value of a parameter lies within that range.

The confidence interval of a statistical data can be written as.

x+/-zr/√n .......1

Given;

Mean gain x = 72.5 cm

Standard deviation r = 4.5 cm

Number of samples n = 16

Confidence interval = 95%

z (at 95% confidence) = 1.96 (from the table)

Substituting the values we have into equation 1;

72.5 +/- 1.96×4.5/√16

72.5 +/- 2.20 cm

[70.30, 74.70]

Therefore, the 95% confidence interval is

[70.30, 74.70] cm

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3 years ago

Simplify. -9 -5 -7 х Y Z 2 6 3 X Y Z

krok68 [10]

Answer:

$= {x}^{ - 11} {y}^{ - 11} {z}^{ - 10}$

Step-by-step explanation:

$= \frac{ {x}^{ - 9} {y}^{ - 5} {z}^{ - 7} }{ {x}^{2} {y}^{6} {z}^{3} } \\ = {x}^{ - 9 - 2} {y}^{ - 5 - 6} {z}^{ - 7 - 3} \\ = {x}^{ - 11} {y}^{ - 11} {z}^{ - 10}$

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3 years ago

A marathon is 26.2 miles long. There is a water station every 1 1/4 miles along the race route. How many water stations are need

BigorU [14]

Answer:

Step-by-step explanation:

Divide 26.2 by 1 1/4

6 0

4 years ago

Solve the inequality (2)

Yuki888 [10]

Hi,

$\dfrac{2c}{3}+1\ \textgreater \ 7\\\\3\times\left(\dfrac{2c}{3}+1\right)\ \textgreater \ 3\times7\\\\2c+3\ \textgreater \ 21\\2c\ \textgreater \ 21-3\\2c\ \textgreater \ 18\\\\c\ \textgreater \ \dfrac{18}{2}\\\\c\ \textgreater \ 9$

5 0

3 years ago

Read 2 more answers

The area of a square is 22 square feet. Which is closest to the length of each side of the square?

Tju [1.3M]

Answer:

B, 3.7

Step-by-step explanation:

have a more thing square 2² solve is this

8 0

3 years ago