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
alekssr [168]
3 years ago
13

Ardi and Lei are both travelling by train.

Mathematics
1 answer:
lianna [129]3 years ago
4 0

Answer:

10 kilometer/hour

Step-by-step explanation:

Average speed = Total distance travelled / Total time taken

Ardi:

Total distance travelled = 70 km

Total time taken = 35 minutes = 35/60 hour

Average speed = Total distance travelled / Total time taken

= 70 km ÷ 35/60 hr

= 70 × 60/35

= 4,200/35

= 120 kilometer/hour

Lei:

Total distance travelled = 585 km Total time taken = 9:05 - 13:35 = 4 hours 30 minutes

= 4.5 hours

Average speed = Total distance travelled / Total time taken

= 585 km / 4.5 hours

= 130 kilometer/hour

Difference, in km/h, between the average speed of their trains = Lei's train - Ardi's train

= 130 kilometer/hour - 120 kilometer/hour

= 10 kilometer/hour

You might be interested in
The cost of renting a car is $46/week plus $0.25/mile traveled during that week. An equation to represent the cost would be y=46
julsineya [31]

The answer for part a is $60.25, for part b the answer is 76 miles, and for part c the answer is 216 miles.

<h3>What is a function?</h3>

It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.

The equation to represent the cost would be y=46+0.25x

x is the number of miles.

a) What is your cost if you travel 57 miles?

Plug x = 57 in the above equation:

y = 46 + 0.25(57)

y = $60.25

b) If your cost was $65.00, how many miles were you charged for traveling?

Plug y = 65 in the equation:

65 = 46 + 0.25x

x = 76 miles

c) Suppose you have a maximum of $100 to spend for the car rental. What would be the maximum number of miles you could travel?

Plug y = 100 in the equation:

100 = 46 + 0.25x

x = 216 miles

Thus, the answer for part a is $60.25, for part b the answer is 76 miles, and for part c the answer is 216 miles.

Learn more about the function here:

brainly.com/question/5245372

#SPJ1

5 0
2 years ago
Read 2 more answers
ANY BRAINLY TEACHER ONLY PLEASE HELP ME!!!
djverab [1.8K]

Answer:

how many snacks did she get??

7 0
4 years ago
Type the missing numbers in this sequence:9, 3,-3,__, -15,__,-27
padilas [110]
The formula for this equation is -6 for each number. So the answer your looking for is 9...3....-3....-9....-15.....-27. Hope I helped you out.
6 0
3 years ago
Pls help me this is very hard
evablogger [386]

Answer:

The shape has 8 vertices

Step-by-step explanation:

You would be able to solve this by counting the points of the shape.

Hope this helps :)

6 0
2 years ago
<img src="https://tex.z-dn.net/?f=%20%7B2%7D%5E%7Bm%7D%20%20%3D%20n%20" id="TexFormula1" title=" {2}^{m} = n " alt=" {2}^{m} =
sveta [45]

Answer:

\displaystyle n^3-\frac{1}{n^{2}}

Step-by-step explanation:

<u>Exponents Properties</u>

We need to recall the following properties of exponents:

(a^x)^y=(a^y)^x=a^{xy}

\displaystyle a^{-x}=\frac{1}{a^x}

We are given the expression:

2^m=n

We need to express the following expression in terms of n.

8^m-4^{-m}

It's necessary to modify the expression to use the given equivalence.

Recall 8=2^3 \text{ and }4 = 2^2. Thus:

(2^3)^m-(2^2)^{-m}

Applying the property:

(2^m)^3-(2^m)^{-2}

Substituting the given expression:

n^3-n^{-2}

Or, equivalently:

\mathbf{\displaystyle 8^m-4^{-m}= n^3-\frac{1}{n^{2}}}

5 0
3 years ago
Other questions:
  • What is the radical form?
    5·1 answer
  • 36=9x................//................................
    7·1 answer
  • If m= (-3) and passes through (1,-5), the equation of the line is y= ?
    11·1 answer
  • At the U.S. Open Tennis Championship a statistician keeps track of every serve that a player hits during the tournament. The sta
    14·1 answer
  • TUESDAY (4/28): What is true about the following sequence: 2.7, 6.5, 10.3, 14.1, 17.9
    13·1 answer
  • 912 divided 58 using estimating to check for reasonableness
    12·2 answers
  • How do you solve 4 [ 5 ( 12 + 3 ) - 2 ] - 7
    5·1 answer
  • A computer is on sale for 25% off. If the sale price is $449, what was the original price?
    7·1 answer
  • 242m/min express this in km/h​
    10·1 answer
  • Evaluate<br><br> 4 / 5/6<br> Give your answer as a mixed number in its simplest form.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!