Answer:
18th term
Step-by-step explanation:
3-4(n-1) = -65
-4n + 4 = -68
-4n = -72
n = 18
9514 1404 393
Answer:
48.6%
Step-by-step explanation:
Efficiency of energy conversion is the quotient of output energy and input energy.
(3291 J)/(6771 J) × 100% ≈ 48.6%
The solar panel's conversion efficiency is about 48.6%.
_____
<em>Additional comment</em>
With current (2021) technology, the best efficiency one can expect from a solar panel is in the neighborhood of 23%.
Answer:
2470
Step-by-step explanation:
Roxie must pick 3 movies from 20 horror films and 8 foreign films with at least two horror films.
i) She can pick 2 horror films and 1 foreign film
The number ways this is possible = C(20, 2) * C(8, 1)

The number ways this is possible = C(20, 2) * C(8, 1) = 190 * 7 = 1330
ii) She can pick 3 horror films
The number ways this is possible = C(20, 3)

The number ways this is possible = C(20, 3) = 1140
The number of ways of picking 3 movies from 20 horror films and 8 foreign films with at least two horror films = pick 2 horror films and 1 foreign film + pick 3 horror films
The number of ways of picking 3 movies from 20 horror films and 8 foreign films with at least two horror films = 1330 + 1140 =2470
60 percent was left
10-4=6
4=40%
Answer:
12. Please find attached the required plot created with MS Excel
Step-by-step explanation:
12. The points are given in their <em>x </em>and <em>y</em>-coordinates as follows;
(-2, 5), and (5, 2)
To plot the points on a graph, MS Excel plot function can be used as follows;
1) We enter the <em>x </em>and <em>y-</em>values of the first point, side by side in cells on the Excel spreadsheet
We enter the <em>x </em>and <em>y-</em>values of the second point, beneath the first point on the spreadsheet as follows;

2) The four cells are selected and from the Insert menu within the Chart group, the Scatter (x, y) chart is selected
3) The plot created with MS Excel is attached