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djyliett [7]
3 years ago
15

Can someone help me with this maths equations please?

Mathematics
1 answer:
ale4655 [162]3 years ago
4 0

Answer:

T=4B+10C

Step-by-step explanation:

for every bag there are 4 doughnuts

for every carton there are 10 doughnuts

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You randomly sample 5 people in your​ school, and none of them is a vegetarian. Does this mean that the probability of being a v
kap26 [50]

Answer:

B.

Step-by-step explanation:

The sample size taken for the school is too small.

5 people not being vegetarian does not mean NO OTHER students are vegetarian also. Thus, an assumption based on this probability of 5 people would not be correct unless fully supported. This makes option A wrong.

Answer B is correct because with small numbers, probability varies a lot and may change drastically with the addition of data.

For example: the 6th person we sample says he/she is a vegetarian.

This would change the probability drastically to 1/6 = 0.1667

Because this is a drastic change, and fluctuation is clear, answer B is correct.

C is wrong because probability is not subjective.

7 0
3 years ago
In an average of 65 minutes if a train stops at three stations for two minutes each and the distance is 115 miles between stops
larisa86 [58]

Answer:

117mph

Step-by-step explanation:

Given that

Total number of stations= 3

Total average time of journey of train = 65

total stop time at three stations = 3×2 =6 min

Total distance between stops = 115 miles

as we can see

Total time train was travelling = 65- 6 =59 min

so, average speed of train can be calculated as:

Average Speed = \frac{Distance -travelled-between -stations}{Total-time-the-train-travelled}

Average Speed = \frac{115}{59} =1.95 miles/minute

To convert this speed into miles per hour (mph) multiply the above speed by 60

Average speed = 60×1.95 =117 mph

So the average speed of train is 117mph.


3 0
3 years ago
After 30 seconds, 720 frames of film have passed through a movie projecter. At this rate, what is the approximate running time i
zlopas [31]
2,375 is the answer because 720 divided by 30 is 24 and your dividing by 24 so 57,000 divided by 24 is 2,375
4 0
3 years ago
There are 6 large picture frames. Each picture frame contains 2 pictures. What number sentence can be used to find the total num
Stolb23 [73]

Answer:

the think the answer is b.

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
7.
vodka [1.7K]

Answer:

28 ft

Step-by-step explanation:

4 0
3 years ago
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