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
Valentin [98]
3 years ago
9

Please help me !!!!

Mathematics
1 answer:
liq [111]3 years ago
8 0

Answer:

...

against the wind, an airplane travels 3640 km in 7 hours.

with the wind, the same plane travels 6000 km in 6hrs.

...

let speed of plane in still air be x mph

speed of wind be y mph.

..

t=d/r

..

against wind speed = x-y mph

with wond speed = x=y mph

...

3640/(x-y)=7

3640 = 7x-7y

/7

520=x-y.....................1

...

6000/x+y = 6

6000 = 6x+6y

/6

1000=x+y.....................2

...

Add (1) & (2)

2x=1520

/2

x=760 mph speed of plane in still air

...

plug value of x in 2

1000=760+y

100-760=y

240 = y

240 mph speed of wind

You might be interested in
PLEASE HELP! :)
Katarina [22]
Well lets see. You have a total of 52 marbles. So all you would have to do would be to find the percent of 52 out of 60. This sounds confusing and I may not be completely right but I hope you give it a shot!
3 0
3 years ago
Worth 50 points!!!!!!!!!!!!!!!!!!!!!!!!
erica [24]
Hi,

o) 357 - 486 = -129
f) 4572 + 609 = 5181
b) -12 - 31 = -43
n) - 15 + 8 = -7

Hope this helps.
r3t40
5 0
3 years ago
Read 2 more answers
Someone please help me with the question attached!!
Crank

Answer:

D

Step-by-step explanation:

use desmos graphing calculator to find your answer easier. just put in the equation and the calculator will do the rest

8 0
3 years ago
A travel agent is booking a trip to England, Scotland, Ireland, and France for a group of senior citizens. The agent sent survey
elixir [45]

Answer: 1

Scotland

Step-by-step explanation:

In the first vote, points are:

France = 15

England = 12 + 16 = 28

Ireland = 19

2nd vote

England = 15

Scotland = 12 + 19 = 31

Ireland = 16

3rd vote

Scotland = 15 + 16 = 31

Ireland = 12

England = 19

4th vote

Ireland = 15

France = 12 + 16 + 19 = 47

At the end of everything

England = 19 + 15 + 28 = 62

France = 15 + 47 = 62

Scotland = 31 + 31 = 62

Ireland = 19 + 16 + 12 + 15 = 62

To find the Condorcet winner, the number of votes for runner over opponent (runner,opponent) is compared with the number of votes for opponent over runner (opponent,runner)  

Only Scotland has the highest (31) points twice.

6 0
3 years ago
Suppose that 16 inches of wire costs 48 cents.
padilas [110]
Let’s divide 48 by 16 to see how many cents per inch of wire. 48/16=3 so it costs 3 cents per inch of wire. now all we have to do is multiply 47 by 3, and you will get 141 cents, or $1.41.
7 0
2 years ago
Other questions:
  • Which points are solutions to the linear inequality y < 0.5x + 2? Check all that apply. (–3, –2) (–2, 1) (–1, –2) (–1, 2) (1,
    8·2 answers
  • A square patio has an area of 173 square feet. How long is each side of the patio to the nearest tenth?
    5·1 answer
  • a store selling a couch for $623 on a 24 month payment plan if your down payment of 152 is given and no interest is charged how
    5·2 answers
  • The ratio of adams height to sam's height is 4:3 how many times sam's height is adams height
    6·2 answers
  • Of the 8 students in the chess club, three will represent the club at an upcoming competition. How many different 3-person teams
    8·2 answers
  • Square root &amp; simplifying radicals <br> √30
    12·1 answer
  • If d(x) = x2 - 7x - 7, find d(x - 1).​
    12·1 answer
  • I need help with this
    13·1 answer
  • Uoigbouviuviuviyuvoiuyv
    5·1 answer
  • The dot plot shows the ages of soloists in a orchestra. Answer the following questions below.
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!