1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kakasveta [241]
3 years ago
6

please provider answer? A train travels 160160 km in the same time that a plane covers 720720 km. If the speed of the plane is 2

020 km per hr less than 55 times the speed of the? train, find both speeds
Mathematics
1 answer:
lys-0071 [83]3 years ago
3 0
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>
You might be interested in
PLZ HELP ILL MARK YOU BRAINLEST ‼️<br><br>a) 120°<br><br>b) 50°<br><br>c) 70°<br><br>d) 180°​
Alexus [3.1K]

Answer:

120°

Step-by-step explanation:

Add the 2 opposite angles to find the exterior angle.

50° + 70° = 120°

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

6 0
3 years ago
Read 2 more answers
Chris plotted 3 points on the graph of the equation y=2x. Which coordinates name the points on Chris’s graph?
Makovka662 [10]

Answer:

(0,0) (2,4) (-2,-4)

Step-by-step explanation:

8 0
2 years ago
The value of the 7 in 507,264 is 10 times the value of the 7 in which number?
monitta
The value of seven is in the thousands place and is 10 time the number seven if it were at the hundreds place, which is where 2 is.

7000=10 x 700
7000=7000
3 0
3 years ago
Read 2 more answers
If an ecosystem can only hold about 12-15 animals what is this called?​
V125BC [204]
It is called Ecological Succesion hope that helped:)
5 0
2 years ago
Select the correct answer from the drop-down menu.
lidiya [134]

Answer:

6y² - 20y + 6

Step-by-step explanation:

Use FOIL method

(3y - 1)(y-3) = 3y*y + 3y*(-3) + (-1)*y + (-1)*(-3)

                 = 3y²- 9y - y + 3    {add the like terms}

                = 3y² - 10y + 3

2(3y - 1)(y - 3) = 2 ( 3y² - 10y + 3)

                      = 2*3y² - 2*10y + 2*3

                      = 6y² - 20y + 6

6 0
3 years ago
Other questions:
  • Simplify the expression. Justify that the expressions are equivalent using x = 2. –4(5x + 2) – 6(x – 3) What is the simplified e
    7·2 answers
  • At a restaurant, 5 of every 12 customers had a salad with their meal.
    10·2 answers
  • The ordered pairs (2, 20) and (3, 40) are solutions to an exponential function. Write the equation for this function.
    6·1 answer
  • Hy = 14 – 7y, solve for y
    11·1 answer
  • You work as a sales clerk at a fashion boutique. The store is having a 20 percent off everything sale. Additionally, your manage
    13·2 answers
  • Let f(w) = 2w^3 - 5. What is f(4)?
    14·2 answers
  • Can someone help me please
    5·1 answer
  • the diameter of a U.S penny is 3/4 inch. how many pennies would it take to make a row 42 inches long?
    11·2 answers
  • What is the vertex of the graph of y = –x??<br> 0 (-1,0)<br> O (0, -1)<br> O (0,0)<br> O (1,1)
    5·1 answer
  • Please please please help!!!!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!