T=time
d=st
r=train speed
p=plane speed
<span>160=rt
</span><span>720=pt
speed of plan is 20kmph less than 5 times speed of train
p=5r-20
we notice that 160 times 4.5=720
times first equaton by 4.5
720=4.5rt
720=pt
set equal
4.5rt=pt
divide both sides by t
4.5r=p
sub </span><span>p=5r-20 for p
4.5r=5r-20
minus 4.5r from both sides
0=0.5r-20
add 20 to both sides
20=0.5r
times 2 both sides
40=r
sub back</span><span>
p=5r-20
p=5(40)-20
p=200-20
p=180
plane is 180kmph
train is 40kmph
</span>
424/8 =53
(288 - 144)/(6 - 3) = 144/3 = 48
Miguel has a greater rate than Donna by 5 miles per hour.
Answer: (7x + 3)(7x -3)
Step-by-step explanation:
Answer:
i dont know good luck
Step-by-step explanation:
Answer: 60 student tickets were sold
90 adult tickets were sold
Step-by-step explanation:
Let x represent the total number of student tickets sold.
Let y represent the total number of adult tickets sold.
The Glee Club sold a total of 150 tickets to their spring concert. This means that
x + y = 150
x = 150 - y
Student tickets cost $5.00 each and adult tickets cost $8.00 each. If they had $1,020 in ticket sales,then,
5x + 8y = 1020 - - - - - -1
Substituting x = 150 - y into equation 1, it becomes
5(150 - y) + 8y = 1020
750 - 5y + 8y = 1020
- 5y + 8y = 1020 - 750
3y = 270
y = 270/3 = 90
x = 150 - 90 = 60
