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
Minchanka [31]
3 years ago
5

Anil completes the 72km journey between Bristol and Cardiff in 48 minutes.

Mathematics
2 answers:
eimsori [14]3 years ago
5 0

total distance travelled=72+69=141

time taken in hours for journey= (48/60)h + (69/60)= 1.95 h

average speed=141km/1.95h= 72.3km/h (3 sf)

Talja [164]3 years ago
3 0

think about the journey as two parts and the total journey.

<u>first</u><u> </u><u>part</u><u>:</u>

first you need to find the speed of the first part but you need to convert 48mins to hours which is 0.8 hours.

speed = 72 ÷ 0.8 = 90km/h.

<u>second</u><u> </u><u>part</u><u>:</u>

then you need to find the time it took to complete the second part of the journey.

time = distance/speed = 69 ÷ 60 = 1.15hours

<u>total</u><u>:</u>

then you can find the total distance for both parts of the journey by doing <em>7</em><em>2</em><em>km</em><em> </em><em>+</em><em> </em><em>6</em><em>9</em><em>k</em><em>m</em><em> </em>which is 141km.

the total time would be <em>0</em><em>.</em><em>8</em><em> </em><em>h</em><em>o</em><em>u</em><em>r</em><em>s</em><em> </em><em>+</em><em> </em><em>1</em><em>.</em><em>1</em><em>5</em><em> </em><em>h</em><em>o</em><em>u</em><em>r</em><em>s</em><em> </em>which is 1.95 hours.

now you have the total distance and time so you can find the average speed for the whole journey.

speed = distance ÷ time

= 141 ÷ 1.95

= 72.307692307.... km/h

<em>(</em><em>y</em><em>o</em><em>u</em><em> </em><em>c</em><em>a</em><em>n</em><em> </em><em>r</em><em>o</em><em>u</em><em>n</em><em>d</em><em> </em><em>y</em><em>o</em><em>u</em><em>r</em><em> </em><em>a</em><em>n</em><em>s</em><em>w</em><em>e</em><em>r</em><em> </em><em>t</em><em>o</em><em> </em><em>7</em><em>2</em><em>.</em><em>3</em><em>k</em><em>m</em><em>/</em><em>h</em><em>)</em>

You might be interested in
The coordinates of each rectangle ABCD are A (0,2) B (2,4) C (3,3) D (1,1). Find the distance of each side of the rectangle then
EastWind [94]

AB = CD = √8 ≈ 2.8 units

BC = AD = √2 ≈ 1.4 units

Area of the rectangle ABCD = 3.92 units²

Perimeter of the rectangle ABCD = 8.4 units

<h3>How to Find the Area and Perimeter of a Rectangle?</h3>

Given the coordinates of vertices of rectangle ABCD as:

  • A(0,2)
  • B(2,4)
  • C(3,3)
  • D(1,1)

To find the area and perimeter, use the distance formula to find the distance between A and B, and B and C.

Using the distance formula, we have the following:

AB = √[(2−0)² + (4−2)²]

AB = √[(2)² + (2)²]

AB = √8 ≈ 2.8 units

CD = √8 ≈ 2.8 units

BC = √[(2−3)² + (4−3)²]

BC = √[(−1)² + (1)²]

BC = √2 ≈ 1.4 units

AD = √2 ≈ 1.4 units

Area of the rectangle ABCD = (AB)(BC) = (2.8)(1.4) = 3.92 units²

Perimeter of the rectangle ABCD = 2(AB + BC) = 2(2.8 + 1.4) = 8.4 units

Learn more about the area and perimeter of rectangle on:

brainly.com/question/24571594

#SPJ1

5 0
10 months ago
9. Is the line through points P(7, 3) and Q(11, 0) perpendicular to the line through points R(6, –3) and S(3, 1)? Explain.A)Yes;
Alekssandra [29.7K]

Answer:

C) No, their slopes are not opposite reciprocals.

Step-by-step explanation:

First we find the slopes.

slope of PQ = (3 - 0)/(7 - 11) = 3/(-4) = -3/4

slope of RS = (-3 - 1)/(6 - 3) = -4/3

product of the slopes = (-3/4) * (-4/3) = 1

The slopes are reciprocals, but they are not opposite reciprocals, so the lines are not perpendicular.

7 0
3 years ago
For each right triangle below, find the missing side (Pythagorean’s Theorem) and the missing angle (Angle Sum theorem.)
valkas [14]

Answer:

a=21.2

n=√29

Step-by-step explanation:

90+68.2+a=180

a+158.2=180

a=21.2

2^2+5^2=n^2

4+25=n^2

n^2=29

n=\sqrt{29}

3 0
2 years ago
What is the perimeter of triangle ABC? Round each step to the nearest tenth. Please help me
Ad libitum [116K]

I would use the pythagorean theorem to find the lengths of each side. a² + b² = c².

Side AB is one we're looking for. If you make other right triangle with that same side you can see that one length is 4 and the other is 3. So, 4² + 3² = c² → 25 = c² → 5 = c. Side AB is length 5.

Side AC is another. Do the same with that side and you get that one length is 4 and the other is 3. (This is the same one as above) so side AC is length 5.

Side BC is the last one. One of the lengths is 1 and the other is 1 → 1² + 1² = c² → 2 = c² → 1.414213562 = c so side BC is approximately length 1.41.

Add each length up and you get a perimeter of roughly 11.4

8 0
3 years ago
What is 1 times 1? Please answer because I need this due in 15 minutes
Sonbull [250]

Answer:

1

Step-by-step explanation:

1*1=1

thats it tbh

8 0
3 years ago
Read 2 more answers
Other questions:
  • NEED HELP ASAP
    13·1 answer
  • Need help on this kinda confused
    11·1 answer
  • In which number is the value of the 7 ten times the value of the 7 in the number 1,273
    8·2 answers
  • Cant solve this please help me <br><br> 9x-2y=8 <br> Y=2x+1
    5·2 answers
  • 7x(2x blank)=42 plz answer fast will mark as branliest!!!
    6·1 answer
  • A community hall is shape of a cuboid. The hall is 40 m long, 15 m wide and 3 m high. The community hall needs re-decorating wit
    15·1 answer
  • This is for my lil sister
    14·1 answer
  • Solve.<br> 3.5 x (5.8 - 7.09) =
    11·1 answer
  • F(x) = 3x + 5] + 6
    12·1 answer
  • Question 9 of 25
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!