The answer is 4. I hope this has helped.
SA = 2<span>(<span><span><span>wl</span>+<span>hl</span></span>+<span>hw</span></span><span>)
Plug in what we know:
SA = </span></span>2<span>((24)(27)<span>+(38)(27)+(38)(24)</span><span>)
Multiply:
SA = 2(648 + 1026 + 912)
Add:
SA = 2(2586)
Multiply:
SA = </span></span>5172
Answer: 312 students purchased a ticket
Step-by-step explanation:
Let x represent the number of raffle tickets sold to parents.
Let y represent the number of raffle tickets sold to students.
The school sold 371 tickets. This means that
x + y = 371
x = 371 - y
The parent tickets cost $6 each and the student tickets cost $1.50 each and the school raised a total of $822. This means that
6x + 1.5y = 822 - - - - - - - -1
Substituting x = 371 - y into equation 1, it becomes
6(371 - y) + 1.5y = 822
2226 - 6y + 1.5y = 822
- 6y + 1.5y = 822 - 2226
- 4.5y = - 1404
y = -1404/-4.5
y = 312
x = 371 - y
x = 371 - 312
x = 59
Answer:
Step-by-step explanation:
First find the slope of the line containing points (5,4) and (-7,9). To find the slope use the formula 
. Putting those values in, you have
Simplify
Then, to find the slope of the line perpendicular to that, find the negative reciprocal.
