Answer:
133
Step-by-step explanation:
2(_9)^2=162
3(-9)=-27
2(-9)^2 +3(-9)-2= 162-27-2=133
(n+3)/(2n-6):(n+3)/(3n-9)=(n+3)/(2(n-3))×(3(n-3))/(n+3)=3/2
Answer:
<em>The value of the dependent variable is 2. </em>
Step-by-step explanation:
Given equation is:
Here, the independent variable is and the dependent variable is .
Given that, the independent variable has a value of 1. That means,
Plugging this into the above equation, we will get......
So, the value of the dependent variable is 2.
Answer: 0.992
Step-by-step explanation:
Given : The three systems detects when a trespass occurs with a probability of 0.98 independently of the others.
Then, the probability that system failed to detect a trespass = 1- 0.98 = 0.02
Since each system works independently ,
Then, the probability that none of 3 systems will detect = 0.2 x 0.2 x 0.2 = 0.008
Then the probability that when a trespass occurs, at least one of the systems will detect it
= 1- P( none of three systems detect)
= 1- 0.008=0.992
Hence, the probability that when a trespass occurs, at least one of the systems will detect it = 0.992
The product of the expression in scientific notation is expressed as 6.45 * 10^-9
<h3>Scientific notations</h3>
The standard scientific notation is expressed as:
A * 10^n
A is any value between 1 and 10
n is any integer
Given the product
(4.3 x 10-7)(1.5 x 10-3)
= (4.3 * 1.5)(10^-7 * 10^-3)
= 64.5 * 10^-10
= 6.45 * 10^-9
Hence the product of the expression in scientific notation is expressed as 6.45 * 10^-9
Learn more on scientific notation here: brainly.com/question/5756316
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