<em>Answer</em>
<em><u>Given</u></em>
<em>the relative frequency tables in the figure below (Note: the tables are not in the same order as in the problem statement)</em>
<em />
<em><u>Find</u></em>
<em>which table is best suited to answer the question</em>
<em />
<em>A) the percentage of home viewers who prefer to watch horror movies </em>
<em />
<em>B) the percentage of people surveyed who prefer to watch comedy movies at home </em>
<em />
<em>C) the percentage of viewers with a preference for drama who watch at the theater </em>
<em />
<em><u>Solution</u></em>
<em>The figure shows the best choices for answering A, B, and C.</em>
<em />
<em>table 2 is best for A (it is normalized by viewing location)</em>
<em />
<em>table 3 is best for B (it is normalized over the whole sample)</em>
<em />
<em>table 1 is best for C (it is normalized by genre)</em>
9514 1404 393
Answer:
(x, y) = (4, 1)
Step-by-step explanation:
Step 1. Look for an equation that has a coefficient of 1 or -1 for one of the variables. Here, that is the first equation, which has a y-coefficient of -1.
Step 2. If you found such an equation, solve for the variable.
y = 2x -7
Step 3. Use that expression for the variable to substitute into the other equation.
3x -2(2x -7) = 10
Step 4. Solve the resulting equation in the usual way.
3x -4x +14 = 10 . . . . . eliminate parentheses
-x +14 = 10 . . . . . . . collect terms
4 = x . . . . . . . . . separate variable terms and constant terms. Here, we added x-10 to both sides.
If the variable has a coefficient that is not 1, divide both sides by that coefficient.
Now, you can use this value in the expression for y that we found above.
y = 2(4) -7 = 1
The solution is (x, y) = (4, 1).
To find the product of 12,-5: You multiply 12 and -5, 12×-5=-60. So the product is -60.