We have a system of equations 2x - 4y = 5 and 6x - 3y = 10.
We want to eliminate one variable when we add up the equations.
If we want to eliminate the x variable, we need to multiply the top, bottom or both of the equations with a number that when the equations are added together will eliminate the x variable.
Multiply the top equation by -3.
-3(2x - 4y) = 5 * -3
-6x + 12y = -15
Now when we add the two equations together, the x's will be eliminated.
-6x + 12y = -15
6x + 6y = 10
18y = -5
The x's were eliminated.
Answer:-3x+12
Step-by-step explanation:
I had the same problem but it worked fine for me after i uninstalled and reinstalled maybe use socratic for sometime
Answer:
0.095163
Step-by-step explanation:
given that a starter motor used in a space vehicle has a high rate of reliability and was reputed to start on any given occasion with probability .99999
Here we find that for any start, there are exactly two outcomes either success or failure.
Also each start is independent of the other since p = 0.99999 for succss is given constant.
Thus X no of successes is binomial with p = 0.99999 and n =10000
If Y is taken as failure then Y is binomial with p' = 0.00001 and n =10000
Required probability
= the probability of at least one failure in the next 10,000 starts
= 1-P(no failure in 10000 starts)
=
Answer:
1) Option C) Parameter
2) Option D) Statistic
Step-by-step explanation:
We are given the following statement n the question:
Phone-in poll conducted by a newspaper reported that 57% of those who called in liked ''real TV''.
The unknown true percentage of American citizens who like ''real TV'' is a parameter because here we talk about the whole population of Americans who like the real TV
- Parameters are numbers that summarize data for an entire population.
57% is the proportion of sample that is describing the sample of people who participated in the poll and liked real TV and thus, 57% is the statistic.
- A statistic is a characteristic of a sample. Generally, a statistic is used to estimate the value of a population parameter.