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
Xelga [282]
3 years ago
5

A plane traveled 1012 miles each way to Warsaw and back. The trip there was with wind. It took 11 hours. The trip back was into

wind. The trip back took 22 hours. What is the speed of the plane in still air? What is the speed of the wind?
Mathematics
1 answer:
lesya [120]3 years ago
3 0

Answer: speed of plane is 69/miles per hour

Speed of wind is 23 miles per hour

Step-by-step explanation:

Let x represent the speed of the plane.

Let y represent the speed of the wind.

A plane traveled 1012 miles each way to Warsaw and back. The trip there was with wind. It took 11 hours.

This means that the speed is x+y miles/hour. Therefore

1012 = 11(x+y)

1012 = 11x + 11y - - - - - - - - 1

The trip back was into wind. The trip back took 22 hours.

Since it flew against the wind, the speed would be x-y km/hour

Distance = speed × time. Therefore

1012 = 22(x - y )

1012 = 22x - 22y

Dividing through by 2

506 = 11x - 11y- - - - - - - - - 2

Adding equation 1 and equation 2, it becomes

1518 = 22x

x = 1518/22 = 69

Substituting x = 69 into

1012 = 22(x - y )

x - y = 1012/622= 46

y = 69 - 46 = 23

You might be interested in
You increase the size of a page by 30%. Then you decrease it by 30%. What is the size of the page now?
kotegsom [21]
Lets use 1 to solve this problem because it is easiest to show. 

Multiply 1 by 1.3 for a 30% increase (1*1.3=1.3). 

Then multiply 1.3 by .7 for a 30% decrease. (1.3*.7=.91)  

Therefore the page had a 9% reduction from its original size or is 91% of its original size. 
8 0
3 years ago
Read 2 more answers
~~!! i raised the points and i will give brainliest !!~~
weeeeeb [17]

Answer:

r = 3072. A 4 is multiplied times each term to arrive at the next term. OR ... divide a2 by a1 to find the common ratio of 3072. :)

Step-by-step explanation:

7 0
3 years ago
Please help, will give brainlist
ladessa [460]

Answer:

x^{2}-2+\frac{20}{x+7}

Step-by-step explanation:

x + 7) x³ + 7x²- 2x + 6 ( x²- 2

        <u> x³ + 7x²</u>

                     -2x + 6

                     <u>-2x - 14</u>

                           +20

Therefore, we can write the expression in the remainder quotient form as,

x^{2}-2+\frac{20}{x+7}

5 0
3 years ago
Hank is throwing a surprise party. The party costs $20 per person. Create an equation and graph to represent the relationship be
o-na [289]

Answer:

10 people,200 dollars. 20 people,400 dollars.100 people,2000 dollars.300 people,6000 dollars.

6 0
3 years ago
Solve for x,y, and z
Lostsunrise [7]
Equation 1)  3x + 2y - 5z = 3
Equation 2)  4x - 2y - 3z = -10
Equation 3)  5x - 2y - 2z = -11

Add equation 1 with equation 2.

Equation 4)  7x - 8z = 7

Then subtract equation 3 from equation 2.

Equation 5)  -x -z = 1

Multiply all of equation 5 with 7.

5)  -7x - 7z = 7
4)  7x - 8z = 7

Add equations together.

z = 14

Plug in 14 for z in equation 4.

7x - 8z = 7

7x - 8(14) = 7

7x - 112 = 7

7x = 119

x = 17

Plug in 17 for x in equation 1, and 14 for z.

1)  3x + 2y - 5z = 3

3(17) + 2y - 5(14) = 3

51 + 2y - 70 = 3

2y - 19 = 3

2y = 22

y = 11

So, x = 17, y = 11, and z = 14

~Hope I helped!~



3 0
3 years ago
Other questions:
  • Francis earns $3.50 an hour mowing lawns. He also gets a $10.00 a week allowance. Bella earns $5.25 an hour babysitting and spen
    15·1 answer
  • Your goal for the month was to keep Cost of Goods Sold under 25% of revenues for food and drinks. Your restaurant sold $36,889 o
    12·1 answer
  • The point-slope form of the equation of a line that passes through points (8, 4) and (0, 2) is y – 4 = (x – 8). What is the slop
    10·2 answers
  • Describe whether each of the following is linear or not linear. In each case, explain your answer.
    14·1 answer
  • A plane averaged 500 mph on a trip going east, but only 200 mph on the return trip. The total flying time in both directions was
    10·1 answer
  • A child wants to fill up a box with snow he can only carry the box if it weighs under 30 pounds the dimensions of the box are 30
    15·2 answers
  • Please Help Me i will do anything
    13·1 answer
  • Isabella is travelling in Brazil during the summer, She knows that a 15-minute phone call home to her family costs $45.85 and a
    6·1 answer
  • Cindy woks Monday through Friday at a rate of $15.18 per hour. She takes a 1-hour lunch break. If she
    8·1 answer
  • I'll mark u as brainliest pls help with these 2 questions ​
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!