tan = opposite/hypotenyse
for B, this is 24/25
24/25 = 0.96
Answer:
32cm^2
Step-by-step explanation:
The surface area is the sum of surfaces of all walls.
The 3 visible walls are 2cm*3cm, 2cm*3cm and 2cm*2cm.
The 3 invisible walls are each identical to the parallell walls.
The surface area is
2 * (2cm*3cm + 2cm*3cm + 2cm*2cm) = 2 * (6cm^2 + 6cm^2 + 4cm^2) = 2 * 16cm^2 = 32cm^2
Answer: 0.153 is the largest
Step-by-step explanation:
1/7=0.14, 1/12=0.08, and 15%= 0.150
False. .02*10 is .2, not 2.
Answer:

The mean of the distribution is 0.25.
The variance of the distribution is of 0.6875.
Step-by-step explanation:
Probability density function:
For it to be a probability function, the sum of the probabilities must be 1. The probabilities are 3c, 3c and 6c, so:



So the probability distribution is:



Mean:
Sum of each outcome multiplied by its probability. So

The mean of the distribution is 0.25.
Variance:
Sum of the difference squared between each value and the mean, multiplied by its probability. So

The variance of the distribution is of 0.6875.