Answer:
first one. x=9
second one. x=10
Step-by-step explanation:
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Answer:
24y
Step-by-step explanation:
Multiple 6x4 to get 24
and then put the y in to
get your answer
Answer:
15
Steps:
B = 2/3M + 4
14 = 2/3M + 4
10 = 2/3M
M = 15
The height is 1.5 because to find the volume of a rectangular prism, you do length x width x height. Without height, you multiply length x width (6x2) and divide that by the volume (18 divided by 12 = 1.5)
Answer:
The probability that all 70 messages are transmitted in less than 12 minutes is 0.117.
Step-by-step explanation:
Let <em>X</em> = the transmission time of each message.
The random variable <em>X</em> follows an Exponential distribution with parameter <em>λ</em> = 5 minutes.
The expected value of <em>X</em> is:
The variance of <em>X</em> is:
Now define a random variable <em>T</em> as:
T = X₁ + X₂ + ... + X₇₀
According to a Central limit theorem if a large sample (<em>n</em> > 30) is selected from a population with mean μ and variance σ² then the sum of random variables <em>X</em> follows a Normal distribution with mean, and variance, .
Compute the probability of T < 12 as follows:
*Use a <em>z</em>-table for the probability.
Thus, the probability that all 70 messages are transmitted in less than 12 minutes is 0.117.