307 Un sistema di 2 equazioni in tre incognite: A è certamente indeterminato B è certamente impossibile C può essere impossibile o indeterminato, ma non determinato D può essere determinato, indeterminato o impossibile

Solve the following system of equations. \[ \begin{array}{l} x+y+z= 2 \\ 4 x-y-z= 8 \\ x-3 y-2 z=-22\end{array} \] Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. A. There is one solution. The solution is ( (Type integers or simplified fractions.) There are infinitely many solutions. The solution set is \( \{(x, y, z) \mid x-3 y-2 z=-22\} \). C. The solution set is \( \varnothing \).

4. \( V(2 ; 3), W(-3 ; 4) \) and \( Z(1 ;-4) \) are the vertices of \( \triangle V W Z \) and \( V^{\prime}(12 ; 18) \), \( \quad \) 6. If \( \Delta V^{\prime} \) if \( \Delta V^{\prime} \) \( W^{\prime}(-18 ; 24) \) and \( Z^{\prime}(6 ;-24) \) are the vertices of \( \triangle V^{\prime} W^{\prime} Z^{\prime} \). a) State the factor of enlargement. b) Complete the following statements: i) perimeter \( \triangle V W Z: \) perimeter \( \triangle V^{\prime} W^{\prime} Z^{\prime}=\square: \square \) ii) area \( \triangle V W Z: \) area \( \triangle V^{\prime} W^{\prime} Z^{\prime}=\square: \square \).

Each year, a group surveys 50,000 households to study internet usage. In one area of the study, the group is interested in finding out how many hours a day the household spends streaming video from the internet. Describe the five basic steps in a statistical study with an example of their application below. Describe the third step in this statistical study. Choose the correct answer below. A. Collect raw data from the sample and summarize these data by finding sample statistics of interest. In this case, it would be asking the households how many hours they spend streaming internet video and turning this data into an average. B. Estimate the data for the samphes. In this case, we guess, that, on average, a household spends 1.5 hours per day streaming internet video. C. Collect raw data from the sample and summarize these data by finding sample statistics of interest. In this case it would be asking the households if they have internet access. D. Discover if there is interest in this study. In this case, we ask other researchers if they would be interested in reviewing the collected data. Get more help -

Each year, a group surveys 50,000 households to study internet usage. In one area of the study, the group is interested in finding out how many hours a day the household spends streaming video from the internet. Describe the five basic steps in a statistical study with an example of their application below. Describe the second step in this statistical study. Choose the correct answer below. A. Choose a representative sample from the population. In this case, it would be choosing a sample of 50,000 households. B. Start collecting data. In this case, we randomly call phone numbers and ask them about their internet habits. C. Redefine the goal of your study. In this case, we also want to discover how many hours per day a household spends checking email. D. Choose a representative sample from the population. In this case, it would be choosing a small sample from the 50,000 households.

Find the base of 'a parallelogram with a height of 10.5 feet and an area of \( 189 \mathrm{ft}^{2} \).