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
mrs_skeptik [129]
2 years ago
12

The distance between two cities is 180km. The distance was covered by a car at the rate of 50km/h, by a bus 45km/h, by a truck a

t 40km/h, and by a bicycle at 25km/h. How lond did each take to travel the entire distance? Are speed and time directly proportional or inversely proportional? What is the constant of variation?
Mathematics
1 answer:
Gennadij [26K]2 years ago
7 0

Answer:

The speed and time are directly proportional in that the higher the speed the lesser the time and vice versa.

The constant is the total distance which is 180 km

Step-by-step explanation:

Step one:

given data

The distance between the  two cities is 180km

1.The distance was covered by a car at the rate of 50km/h

The time taken will be

velocity= distance/time

time= distance/velocity

time= 180/50

time= 3.6 hours

2.The distance was covered by a bus 45km/h

The time taken will be

velocity= distance/time

time= distance/velocity

time= 180/45

time= 4 hours

3.The distance was covered by a bicycle at 25km/h

The time taken will be

velocity= distance/time

time= distance/velocity

time= 180/25

time= 7.2 hours

You might be interested in
Line bc is represented by 3x + 2y =8 line ad is a represented by -3 x -2y =6 what is the relationship of line bc to line ad expl
Vlad1618 [11]

Answer:

Parallel lines

Step-by-step explanation:

Line BC:

3x + 2y =8

Line AD:

-3x - 2y =6

Adding both equations, in this case, gives us the point at which the lines intersect:

3x + 2y-3x-2y =8+6\\0=14

Since zero will never equal fourteen, the equation above means that lines BC and AD will never intersect. When two lines have no point in common, they are said to be parallel lines.

8 0
3 years ago
What is meant by a system of linear equations?
photoshop1234 [79]
It’s a grouping of linear(straight line)equations that deal with the same variables. Hope that helped?
7 0
2 years ago
HELP ASAP!!
Alona [7]

Answer:

The answer is C) - |x - 2| + 3 = 0

Step-by-step explanation:

a) - |x - 2| + 3 > 0

The greater than means something above the graph.

b) - |x - 2| + 3 < 0

The less than means something below the graph.

c) - |x - 2| + 3 = 0

The zero doesn't do anything.

y = - a |x - h| + k = 0

(h,k) is the origin.

h is shift left/right, h = 2 so shift right 2.

k is shift up/down, k = 3 so shift up 3.

The a, affects the y-values which cause the graph to reflect across the x-axis.

6 0
2 years ago
Which expression can be used to find 25 percent of 88?
Dominik [7]

Answer: 25/100* 88

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
The sum of two consecutive even integers is 2 find two integers
pochemuha

the two consecutive even integers are:

x

x+2

x+x+2=2

2x+2=2

2x=0

x=0

x+2=2

7 0
3 years ago
Other questions:
  • The statue of liberty is 151 ft tall. calculate its height in meters answers
    9·1 answer
  • Find the probability of rolling factors of 4.​
    11·1 answer
  • 5a+4c-b<br><img src="https://tex.z-dn.net/?f=5a%20%2B%204c%20-%20b%20" id="TexFormula1" title="5a + 4c - b " alt="5a + 4c - b "
    14·1 answer
  • Given f(x) = 2x+5 and g(x) = -2x-2, evaluate: f(-2)
    12·1 answer
  • If a fair coin is tossed 11 times, in how many different ways can the sequence of heads and tails appear?
    14·1 answer
  • In a swimming competition, Susie swims 22 laps less than Jackie (j). Write an expression for the number of laps
    11·1 answer
  • Mr. Kazadi said that in his 2nd-period class, 23 out of 25 students passed the test. What percent of the students passed the tes
    5·2 answers
  • Help please I need to answer this question
    10·1 answer
  • How many solutions does this equation have?
    12·2 answers
  • Which of these are NOT potential rational roots of 8x^3 + 15x^2 – 7x – 5?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!