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
Ksenya-84 [330]
4 years ago
14

2) A bike racer completed a 20.0 kilometer race. She pedaled the first 5.0 kilometers with an average speed of 20.0 km/hr. She p

edaled the next 5.0 kilometers (which were uphill) at an average speed of 10.0 km/hr. She completed the next 5.0 kilometers (which were downhill) at an average speed of 25.0 km/hr and the final 5.0 kilometers she covered at an average speed of 20.0 km/houra) (2point) How long did it take the biker to complete the race
Mathematics
1 answer:
MakcuM [25]4 years ago
8 0

Answer:

Step-by-step explanation:

Time = distance/speed

Considering the first stage,

Speed = 20km/hr

Distance = 5km

Time = 5/20 = 0.25 hour

Considering the second stage,

Speed = 10km/hr

Distance = 5km

Time = 5/10 = 0.5 hour

Considering the third stage,

Speed = 25km/hr

Distance = 5km

Time = 5/25 = 0.2 hour

Considering the third stage,

Speed = 20km/hr

Distance = 5km

Time = 5/20 = 0.25 hour

Therefore, the time it took the biker to complete the race is

0.25 + 0.5 + 0.2 + 0.25 = 1.2 hours

You might be interested in
Triangle PQR has the coordinates P(2,4), Q(-2,4), R(0,-5).
tensa zangetsu [6.8K]

Answer:

I hope I got this correct.

Step-by-step explanation:

Multiply the coordinates by 2.

P(4,8)

Q(-4,8)

R(0,-10)

For the future if you get stuck, multiply the coordinates by the dilation number.

4 0
3 years ago
a loaded truck is traveling 20 mph faster than a freight train. In the time it takes the train to travel 160 miles, the truck tr
almond37 [142]
Speed of trucks= x speed of trains =x-30 A loaded
6 0
3 years ago
Solve. Your solution needs to have the variable first. -4 + x < -10
sesenic [268]

Answer and Step-by-step explanation:

First off, we need to get the variable by itself. We do this by adding 4 to each side of the inequality.

x < -6

Our answer is x < -6, so all values that are inputted to x and are less than -6 are solutions to the inequality.

<u><em>#teamtrees #PAW (Plant And Water)</em></u>

5 0
3 years ago
Lin's job pays $8.25 an hour plus $10 of transportation allowance each week. She has to work at least 5 hours a week to keep the
Usimov [2.4K]
Y=8.25x+10

10 is the allowance plus the 8.25 times x which is the hours
5 0
3 years ago
X + 5y = -27<br> -2x - 5y = 24
Rashid [163]

Answer:

Step-by-step explanation:

x+5y=-27

-2x-5y=24

If the signs are the same u minus if they are different u add

So they are different were gonna add

x+5y=-27

-2x-5y=24

-1=-3

You cant divide it further x=-3

Next were gonna subsitute in any equation

x(-3)+5y=-27

-3+5y=-27

+3 to -27

-7+3=-24

5y=24

24/5=4.8 y=4.8

I hope this helps.

4 0
3 years ago
Other questions:
  • A worker was paid a salary of $8,400 in 1982. Each year, a salary increase of 5% of the previous year's salary was awarded. How
    7·1 answer
  • What is the y-coordinate of the point that divides the directed line segment from J to K into a ratio of 2:3?
    8·2 answers
  • Janet is building a rectangular pumpkin patch. The perimeter of the pumpkin patch is 100 meters. The width of the garden is 7 me
    10·1 answer
  • While thrilling, there is a chance that you would have an accident if you elected to drive on the wrong side of a divided highwa
    7·1 answer
  • Solve the equation 8·4^x+1=1​
    7·1 answer
  • Rose has a rectangular patio that is 8 tiles long and 5 tiles wide. She is changing the dimensions to 10 tiles long by 9 tiles w
    10·2 answers
  • Point (-3,4) is rotated 180° about the origin in a
    13·1 answer
  • Factor -4x+24-4x^2completely
    13·1 answer
  • Beverly wants to list the following numbers in order from greatest to least l. Place the rational number in order from greatest
    8·1 answer
  • A retailer was given a trade discount are 15% and cash discount of 6% by the wholesaler. How much did the retailer pay for a goo
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!