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Leokris [45]
2 years ago
12

Anil completes the 72km journey between Bristol and Cardiff in 48 minutes. He then drives 69km from Cardiff to Swansea at an ave

rage of 60km/h. What is anils average speed in km/h for his total journey from Bristol to swansea
Mathematics
1 answer:
Sergeeva-Olga [200]2 years ago
3 0

Step-by-step explanation:

we simply need to get the total distance and the total time and put them into relation, norming it to distance in 1 hour. after all, speed is always an average number over a period of time (even if it is a tiny period of time).

the total distance is

72 + 69 = 141 km

he drove 69 km going 60 km/h.

how much time did he need ?

we need to get the hours out of an expression of km and h.

so, we need to do

69 km × 1/60 km/h = 69 h / 60 = 69 minutes = 1.15 hours =

= 1 h 9 minutes

so, the total time was

48 + 69 = 117 minutes = 117/60 = 1.95 hours

the average speed for the whole trip was then

141 km / 1.95 h = 141/1.95 km / 1 h = 72.30769231... km/h

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Alina [70]

The difference quotient of the function that has been presented to us will turn out to be 5.

<h3>How can I calculate the quotient of differences?</h3>

In this step, we wish to determine the difference quotient for the function that was supplied.

To begin, keep in mind that the difference quotient may be calculated by:

Lim h->0 \frac{f(x+h)-f(x)}{h}

Now, for the purpose of the function, we need this:

Then we will have:

$$\begin{aligned}&\lim _{h \rightarrow 0} \frac{j(x+h)-j(x)}{h} \\&\lim _{h \rightarrow 0} \frac{5 *(x+h)-3-5 * x+3}{h} \\&\lim _{h \rightarrow 0} \frac{5 x+5 h-3-5 x+3}{h} \\&\lim _{h \rightarrow 0} \frac{5 h}{h}=5\end{aligned}$$

j(x) = 5x - 3

Then the following will be true:

Therefore, 5 is the value of the difference quotient for j(x) is %

Read the following if you are interested in finding out more about difference quotients:

brainly.com/question/15166834

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6 0
1 year ago
In a class of 75 students, 50 of them are girls and 25 of them are boys. What percentage are girls?
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Check pdf

Step-by-step explanation:

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4 0
3 years ago
Can somebody answer questions i) and j) please
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i)

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j)

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8 0
3 years ago
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german

Answer:

$1.40 per pint

Step-by-step explanation:

4 cups is the same as 2 pints.

If 2 pints cost $2.80

divide $2.80 by 2

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3 years ago
Expand &amp; simplify: (x - 5)(x + 2)
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Answer:

( x - 5 )( x + 2 )

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7 0
3 years ago
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