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Anna35 [415]
3 years ago
7

A train leaves at 11.15 and arrives at its destination at 12.23. If the train travelled 95 km, what was it's average speed in km

/h? Give your answer rounded to 1 dp.
Mathematics
1 answer:
xxMikexx [17]3 years ago
4 0

Answer:

Average speed v = 83.8 km/h

Step-by-step explanation:

Given;

Distance travelled = 95 km

Time taken t = 12.23 - 11.15 = 1 hour 8 minutes

t = 1 + 8/60 hours = 1.133 hours.

Average speed v = distance travelled/time taken

substituting the values;

v = 95 km ÷ 1.133 hours

Average speed v = 83.8 km/h

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The arc length of a sector created by a 90° angle is 25 cm. What is the circumference of the entire circle? Express
docker41 [41]

Answer:

We know length of one quarter of a circle = 2πr/4 = πr/2

So here we can make the equation for to find thr value of radius r

length of one quarter given = 25 cm

so πr/2 = 25 cm

=> πr = 50 cm

=> r = 50/π cm

So the entire circumference of circle =

2πr

= 2 π 50/π cm

= 100π/π cm (ans)

Here we dont substitute the value of π due to represent the answer in terms of pi.

Hope it helps you

6 0
3 years ago
23n=2.4<br> A. 3.6 <br><br> B. 7.2 <br><br> C. 1.2<br><br> D. 1.6
svp [43]

\huge\text{Hey there!}

\mathsf{23n =2.4}

\large\text{DIVIDE 23 to BOTH SIDES}

\mathsf{\dfrac{23n}{23}=\dfrac{2.4}{23}}

\large\text{Cancel out: }\mathsf{\dfrac{23}{23}}\large\text{ because it gives you 1}

\large\text{Keep: }\mathsf{\dfrac{2.4}{23}}\large\text{ because it helps us solve for n}

\mathsf{n = \dfrac{2.4}{23}}

\mathsd{\dfrac{2.4}{23}= 2.4\div 23\rightarrow \bf 0.104348}

\boxed{\boxed{\large\textsf{Answer: \huge n = \bf 0.104348}}}\huge\checkmark

\boxed{\textsf{NONE OF THE ABOVE is your ANSWER}}

\text{Good luck on your assignment and enjoy your day!}

~\frak{Amphitrite1040:)}

8 0
2 years ago
Giải phương trình sau:<br> sinx=1/2
cupoosta [38]

Answer: \begin{bmatrix}\mathrm{Radians:}\:&\:x=\frac{\pi }{6}+2\pi n,\:x=\frac{5\pi }{6}+2\pi n\:\\ \:\mathrm{Degrees:}&\:x=30^{\circ \:}+360^{\circ \:}n,\:x=150^{\circ \:}+360^{\circ \:}n\end{bmatrix}

Step-by-step explanation:

\sin \left(x\right)=\frac{1}{2}

x=\frac{\pi }{6}+2\pi n,\:x=\frac{5\pi }{6}+2\pi

4 0
2 years ago
Read 2 more answers
27.3= 3/4y<br><br>what does y equal?
12345 [234]
The answer would be 36.4
5 0
3 years ago
PLEASE ANSWER SOON<br> Has a picture of question
earnstyle [38]
The answer is 21 which comes from 7 * 3.

Draw the four points in a complex plane. From the drawing you can see that the lenght is 4i - (-3i) = 4i + 3i = 7i, and the width is 1 - (-2) = 1 + 2 = 3.

So, the area is 7 * 3 = 21.




8 0
3 years ago
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