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
Leni [432]
3 years ago
13

Going against the current, a boat takes 6 hours to make a 120-mile trip. When the boat travels with the current on the return tr

ip, it takes 5 hours.
If x = the rate of the boat in still water and y = the rate of the current, which of the following expressions represents the rate of the boat going with the current?

x - y
x + y
xy
Mathematics
2 answers:
earnstyle [38]3 years ago
8 0

Answer: x+y

Step-by-step explanation:

Given: Going against the current, a boat takes 6 hours to make a 120-mile trip. When the boat travels with the current on the return trip, it takes 5 hours.

Clearly , it can be seen that when boat travels with current , it takes competitively less time.

i.e. the speed of the boat would increased by the current.

If x = the rate of the boat in still water and y = the rate of the current, then the expressions represents the rate of the boat going with the current will be :-

x+y

dybincka [34]3 years ago
6 0
Against the current it was going 20mph with the current it was going 24mph , it should be x+y because rate of the boat and rate of the current combined equals the rate of the boat WITH the current 
You might be interested in
Please help out it for my math homework and I sure do have more questions
GalinKa [24]

Answer:

30°

Step-by-step explanation:

Remember, all the interior angles of a triangle add up to 180 degrees. Therefore, we can find the value of x by subtracting the values of the other angles from 180:

x = 180-97-53

x=30

3 0
2 years ago
Read 2 more answers
Ashley is taking a road trip to visit her friend. She drives 87.5 miles before taking a break
DanielleElmas [232]

Answer:

112.5

Step-by-step explanation:

200 - 87.5 = 112.5

6 0
2 years ago
Hello I'm Chloe Can you help me, Thank you :)
andrew-mc [135]

Answer:

b is correct

Step-by-step explanation:

3 0
3 years ago
Let P be the parabola with focus (0,4) and directrix y=x.Write an equation whose graph is a parabola with a vertical directrix t
prisoha [69]

Answer:

y²=4√2.x

Step-by-step explanation:

The focus is at (0,4) and directrix is y=x or x-y =0, for a parabola P.

The distance between the focus and the directrix of the parabola P is

\frac{ |0-4| }{\sqrt{(1)^{2}+(-1)^{2}  } }=\frac{4}{\sqrt{2} }

{Since the perpendicular distance of a point (x1, y1) from the straight line ax+by+c =0 is given by \frac{ |ax1+by1+c| }{\sqrt{a^{2}+b^{2}  } } }

Let us assume that the equation of the parabola which is congruent with parabola P is y²=4ax

{Since the parabola has vertical directrix}

Hence, the distance between focus and the directrix is 2a = \frac{4}{\sqrt{2} }, {Two parabolas are congruent when the distances between their focus and the directrix are same}

⇒ a=√2

Therefore, the equation of the parabola is y²=4√2.x (Answer)

3 0
3 years ago
Richard goes on a 6-mile jog one morning. He jogs the first two miles at an average speed of 6 mph. He progressively slows down;
uysha [10]

Answer:

Average speed = 4 mph

Step-by-step explanation:

Given as

Total distance to travel = 6 mile

now, for first 2 mile the avg speed = 6 mph

for next 2 mile the avg speed = 4 mph

and for rest 2 mile the avg speed = 3 mph

so,  the average speed of the Richard = \frac{3}{\frac{1}{6}+\frac{1}{4}+ \frac{1}{3}  }

Total Avg speed = \frac{3}{\frac{9}{12} }

Or,                       = \frac{3}{9}×12

                           = 4

So the total Average speed = 4 mph         (Answer)

7 0
2 years ago
Other questions:
  • Solve 2x^2 + 3x = −8
    10·1 answer
  • 4a-3b+7a= what is the answer
    10·1 answer
  • two friends travel 150 km and 200 km in time 6 hours and 5 hour respectively. what is the ratio of their average speed?​
    10·1 answer
  • What contains the same variables to the same powers
    6·1 answer
  • If r is a linear function with the slope that is not equal to zero which of the following is always true of its inverse function
    8·1 answer
  • Given the two expressions shown below:
    7·2 answers
  • 20 pts!!! HURRY What is the surface area of the pyramid? PLEASE HURRY
    5·1 answer
  • Find the slope of the line between (12,-18) and (-15,-18).
    13·2 answers
  • Math 1319 chapter 5.1-5.6
    10·1 answer
  • In a stock of 12 blouses, 90 are sleeveless. How many percent of the stock are sleeveless?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!