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
lesya [120]
4 years ago
5

The formula which relates distance, d , speed, s and time, t is = × . (a) Rearrange this formula so that s is the subject. _____

_________________________________________________________________
(b) Calculate the average speed s that a truck travels for a journey of 748 km which takes 11.5 hours. ______________________________________________________________________ ______________________________________________________________________
Mathematics
1 answer:
omeli [17]4 years ago
6 0

Answer:

1. After rearranging the formula as 's' i.e speed is the subject will be given as

speed = \frac{distance}{time} \\ss = \frac{dd}{tt}.

2. The average speed of a truck that travels a journey of 748 km in 11.5 hours is 65.04 kilometre per hour.

Step-by-step explanation:

Ans 1. subject means it come first in the sentence, hence here question is like write speed first in the formula so we have

speed = \frac{distance}{time} \\ss = \frac{dd}{tt}

Ans 2.

Given :

Total distance of a journey = 748 km

Total time taken for the journey = 11.5 h

To Find:

Average speed =?

Solution :

average speed is defined as of total distance covered divided by total time taken.

So, we have

\textrm{average speed} = \frac{\textrm{total distance covered}}{\textrm{total time taken to complete total distance}} \\= \frac{748}{11.5} \\= 65.04\ km/h

You might be interested in
The conversion of square feet to square yards can be represented by direct variation. Three square yards are
grandymaker [24]
<h3>The constant of variation is \frac{1}{9}</h3><h3>The equation is y=\frac{1}{9}x</h3>

<em><u>Solution:</u></em>

Given that,

The conversion of square feet to square yards can be represented by direct variation

Let y represent the number of square yards

Let x be the number of square feet

y \propto x

y = kx ------ eqn 1

Where, "k" is the constant of variation

Three square yards are  equivalent to 27 square feet

Substitute, y = 3 and x = 27 in eqn 1

3 = k \times 27\\\\k = \frac{3}{27}\\\\k = \frac{1}{9}

Thus the constant of variation is \frac{1}{9}

<em><u>What is the equation representing the direct variation?</u></em>

Substitute k = 1/9 in eqn 1

y = \frac{1}{9}x

Thus the equation is found

4 0
4 years ago
Can you help me with this question I am stuck it would be nice if u helped me! &lt;3
Harlamova29_29 [7]

Answer:

You did it correctly that's the right answer

Great Job!

7 0
3 years ago
Which residual plots indicate that the original data set has a linear relationship? Check all that apply
Amanda [17]

Answer: A, B and E

Step-by-step explanation:

A residual values should be equally and randomly spaced around the horizontal axis. If the plot looks like any of the images in C and D, then the data set is probably not a good fit for regression. A non-linear pattern is more appropriate.

4 0
4 years ago
Read 2 more answers
6 cm 5 cm 4 cm 3 cm what does that equal I have done everything and I can't get it right
stiks02 [169]

Answer:

Sum: 18

Conversion to inches: 7.0866

Step-by-step explanation:

Not exactly sure what you are trying to ask here... But I'll do my best?

1.   If you are trying to add each measurement together, you start by writing out:   6 + 5 + 4 + 3. Now you can break it down into smaller parts to be easier.

6 + 5 = 11.  11 + 4 = 15. 15 + 3 = 18.

So the sum of the measurements is 18!

_________________

2. If you are trying to convert this measurement into inches, you could follow these directions:

Since one inch is equal to about 2.54 centimeters, you would need to divide the sum of the values by 2.54.

So 18 / 2.54 is roughly equal to: 7.0866.

8 0
2 years ago
Is the following relation a function?<br><br> 1) Yes <br> 2) No
lesantik [10]

To figure out if the given relation is a function, we first need to know what a function is:

Function: A relation which relates the element x of set X with a single element of set Y

which means that every value of x can give only one value of y

but we can clearly see from the provided diagram that 5 has 2 possible outputs. Hence, the given relation is NOT a function

6 0
3 years ago
Other questions:
  • What is the x intercept Y=-6x+8
    9·2 answers
  • What is the answer to X^2-2X+5=0 rounded to nearest hundreth
    6·1 answer
  • A scientist writes the equation n(h)100e^0.25h to model the growth of a certain bacteria in a petri dish, where N represents the
    8·2 answers
  • Write a system of equations to describe the situation below, solve using substitution, and fill in the blanks.
    8·1 answer
  • What is the median of this data set
    8·1 answer
  • In a certain sequence of numbers, each term after the first is found by doubling and then adding $3$ to the previous term. If th
    14·1 answer
  • Manuel estimates that 2/3 of a pizza is left. Stephen estimates that 3/4 is left. They are
    9·1 answer
  • Help me plsssssssss I’ll put brain
    8·2 answers
  • Which best describes the graph of the function f(x) = 25x?<br><br> NEED HELP FAST
    9·1 answer
  • Find KL<br><br> step by step
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!