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Volgvan
3 years ago
8

I need help very much please

Mathematics
2 answers:
Readme [11.4K]3 years ago
6 0

Answer:

4/8

Step-by-step explanation:

1/2=4/8=5/20

musickatia [10]3 years ago
4 0

Answer:

1/4

Step-by-step explanation:

5/20 = 1/4

hope this helps

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A rectangular prism has a length of 9 centimeters, a width of 4 centimeters, and a height of 2 centimeters.
RUDIKE [14]

Answer:

It will be 72cm

Step-by-step explanation:

Volume of a rectangular prism = (length x width x height) cubic units.

9x4x2=72

5 0
3 years ago
A mine elevator was at a depth of -120 feet. After 15 seconds, the mine elevator was at a depth of -30 feet. Which expression sh
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3 years ago
Give a 98% confidence interval for one population mean, given asample of 28 data points with sample mean 30.0 and sample standar
klio [65]

We have a sample of 28 data points. The sample mean is 30.0 and the sample standard deviation is 2.40. The confidence level required is 98%. Then, we calculate α by:

\begin{gathered} 1-\alpha=0.98 \\ \alpha=0.02 \end{gathered}

The confidence interval for the population mean, given the sample mean μ and the sample standard deviation σ, can be calculated as:

CI(\mu)=\lbrack x-Z_{1-\frac{\alpha}{2}}\cdot\frac{\sigma}{\sqrt[]{n}},x+Z_{1-\frac{\alpha}{2}}\cdot\frac{\sigma}{\sqrt[]{n}}\rbrack

Where n is the sample size, and Z is the z-score for 1 - α/2. Using the known values:

CI(\mu)=\lbrack30.0-Z_{0.99}\cdot\frac{2.40}{\sqrt[]{28}},30.0+Z_{0.99}\cdot\frac{2.40}{\sqrt[]{28}}\rbrack

Where (from tables):

Z_{0.99}=2.33

Finally, the interval at 98% confidence level is:

CI(\mu)=\lbrack28.94,31.06\rbrack

4 0
1 year ago
Evaluate 15/k when k=3
iVinArrow [24]

Answer:

5

Step-by-step explanation:

K equals 3 and so 15/3 equals 5.

7 0
2 years ago
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What is the volume of the figure below, which is composed of two cubes with side lengths of 6 units?
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