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
nordsb [41]
3 years ago
10

A family took 2 hours to drive from City A to City B at a speed of 55 miles per hour. On the return trip , due to snowstorm, the

family took 3 hours to travel back to City A. How many miles did the family travel in all? What was the average speed for the entire trip ?
Mathematics
2 answers:
uranmaximum [27]3 years ago
7 0

Answer:

Total distance traveled in all = 220 miles

Average speed for the entire trip = 44 miles per hours

Step-by-step explanation:

The family traveled from point A to B in 2 hours  at a speed of 55 miles per hour.

Average speed = distance traveled/time taken

Time traveled from point A to B = 2 hours

Average speed from point A to B = 55 miles per hour

using the formula,

55 = Distance traveled from point A to B / 2

cross multiplying

Distance traveled from point A to B = 55 × 2

Distance traveled from point A to B  = 110 miles

The family returned from point B to A , due to snowstorm the family took 3 hours to travel  back to A .

The total travel is the total distance the family covers from point A to B and point B to A.

Since the distance from point A to B is known , point B to A distance is also known.

Total distance covered = distance from point A to B  + distance from point B to A

Total distance covered = 110 + 110 = 220 miles

Total distance traveled in all = 220 miles

Total time traveled = 2 + 3 = 5 hours    

Average speed for the entire trip =  220/5

Average speed for the entire trip = 44 miles per hours

Alisiya [41]3 years ago
3 0
71.3 miles
14.25 is the average speed for the entire trip
You might be interested in
You work at a local grocery store. Your paychecks over the past 6 weeks were $56.05, $41.50, $22.50, $52.90, $49.85 and $31.00.
ICE Princess25 [194]
The arrangement in order would be 22.5, 31, 41.5, 49.85, 52.9, 56.05
the mean would be $42.30 (Added all and divided by 6)
the median would be $45.68 (41.5+49.85=91.35/2= 45.675)
there would be no mode.

5 0
4 years ago
Suppose a and b are the solutions to the quadratic equation 2x^2-3x-6=0. Find the value of (a+2)(b+2).
KonstantinChe [14]

Answer:

(a+2)(b+2) = 4

Step-by-step explanation:

We are given the following quadratic equation:

2x^2-3x-6=0

Let a a and b be the solution of the given quadratic equation.

Solving the equation:

2x^2-3x-6=0\\\text{Using the quadratic formula}\\\\x = \dfrac{-b \pm \sqrt{b^2-4ac}}{2a}\\\\\text{Comparing the equation to }ax^2 + bx + c = 0\\\text{We have}\\a = 2\\b = -3\\c = -6\\x = \dfrac{3\pm \sqrt{9-4(2)(-6)}}{4} = \dfrac{3\pm \sqrt{57}}{4}\\\\a = \dfrac{3+\sqrt{57}}{4}, b = \dfrac{3-\sqrt{57}}{4}

We have to find the value of (a+2)(b+2).

Putting the values:

(a+2)(b+2)\\\\=\bigg(\dfrac{3+\sqrt{57}}{4}+2\bigg)\bigg(\dfrac{3-\sqrt{57}}{4}+2\bigg)\\\\=\bigg(\dfrac{11+\sqrt{57}}{4}\bigg)\bigg(\dfrac{11-\sqrt{57}}{4}\bigg)\\\\=\dfrac{121-57}{156} = \dfrac{64}{16} = 4

3 0
3 years ago
What is the answer to 0.10*200
stealth61 [152]
20 helped you well.
4 0
4 years ago
Plz help meee Thank you very much for whoever helps
ratelena [41]

Answer:

70

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
If j and k are parallel lines, A and B are points on j, and C and D are points on k, how many planes contain points A, B, C, and
natita [175]

A and B are points on j.

C and D are points on k.

Join AD and BC.

ABCD is a quadrilateral.

Clearly, the quadrilateral ABCD is the only plane that contains the points A, B, C and D.

Hence, correct answer is option A. Exactly one.

8 0
3 years ago
Other questions:
  • 5 have no idea please help
    6·1 answer
  • If g(n) varies inversely with n and g(n) = 6 when n = 2, find the value of n when g(n) = 1.5.
    5·1 answer
  • Explain the difference between (-5)2 and -5)2
    11·1 answer
  • Are vectors parallel
    6·1 answer
  • What the answer the answer it is due tomorrow plz help me
    11·1 answer
  • Which of the following does not illustrate randomization?
    12·2 answers
  • How do I graph the proportional relationship of y=2.25×​
    14·1 answer
  • A store manager buys binoculars for $45 each. He marks up the cost by 40% to get the store price. Then the store has a sale and
    6·1 answer
  • On a piece of paper, use a protractor to construct a triangle with angle measures of 40° and 60º.
    14·1 answer
  • Order these numbers from least to greatest.<br> 9.3, 9.209, 9.23, 9.1031
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!