L=7+W
area=30=LW
so subsitute 7+W for length
30=(7+W)(W)
30=W²+7W
minus 30 both sides
0=W²+7W-30
factor
what 2 numbers multiply to get -30 and add to get 7
-3 and 10
0=(W-3)(W+10)
set to zero
0=W-3
3=W
0=W+10
-10=W
false, can't have a negative width
width=3in
L=7+W
L=7+3
L=10
the length is 10in
the width is 3in
Answer:
y = 2,305 homes
Step-by-step explanation:
2015-1995 = 20
84*20 = 1,680
1,680 + 625 = 2,305
Therefore, there were 2,305 homes in the town in 2015.
9514 1404 393
Answer:
3. Asia Gil
Step-by-step explanation:
You should be able to answer question 3 <em>without any math whatsoever</em>. The average amount of the bills will be a number between the highest and the lowest. As you found, it is $23.39.
The question is, "Who will save the most by paying the average amount?" Quite obviously it will be the person who would otherwise pay the most--the person with the highest bill amount: Asia Gil.
_____
Equally obvious, the person penalized the most by sharing the bill is the one who had the lowest bill--the amount farthest below the average: Charlie Cobs.
The answer is 3
Trust me dog