0 of 6 questions completed
Questions:
You have already completed the quiz before. Hence you can not start it again.
Quiz is loading…
You must sign in or sign up to start the quiz.
You must first complete the following:
0 of 6 questions answered correctly
Your time:
Time has elapsed
You have reached 0 of 0 point(s), (0)
Earned Point(s): 0 of 0, (0)
0 Essay(s) Pending (Possible Point(s): 0)
If \(y \left[
\begin{array}{cc}
2 & 4 \\
6 & 8 \\
\end{array}
\right]=\left[
\begin{array}{cc}
n & m \\
18 & p \\
\end{array}
\right]\) where y is a real number, what is m*p?
If \(y \left[
\begin{array}{cc}
n & 4 \\
3 & m \\
\end{array}
\right]=\left[
\begin{array}{cc}
k & 24 \\
n & p \\
\end{array}
\right]\) where y is a real number, what is k?
Which of the following augmented matrices represents the system of equations below?
4y+9x = 30
8x-3y = 7
You are saving money to buy your first car. For an entire school year, you work part-time as a babysitter for two families. You are able to work 2 hours per week for family 1 and 5 hours per week for family 2 during the 38-week school year. The first family pays you $20 an hour, and the second pays you $25 an hour. Which matrix product gives the total amount, in dollars, that you made during the school year?
If \(x=\frac{1}{2}\), what does \(x \left(
\begin{array}{cc}
2 x & -x \\
1 & 0 \\
\end{array}
\right)\) equal?
If \(A=\left(
\begin{array}{cc}
4 & -1 \\
3 & 2 \\
\end{array}
\right)\) and \(B=\left(
\begin{array}{c}
3 \\
2 \\
\end{array}
\right)\), what is BA?