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ohaa [14]
3 years ago
13

James has a bicycle. Each wheel has diameter 45cm. James cycles his bicycle in a straight line in the playground. The front whee

l makes 15 complete revolutions. How far does the bicycle travel? Give your answer in metres.
Mathematics
1 answer:
Korvikt [17]3 years ago
5 0

Answer: 21.21 meters

Step-by-step explanation:

Hi, to answer this, first we have to calculate the circumference (C) of the wheel:

C = π x diameter

Replacing with the values given:

C = π x 45 = 141.37 cm

Then we multiply it by the number of revolutions:

141.37 x 15 = 2,120.6 cm

Since  

1 cm = 0.01 m

2,120.6 x 0.01 = 21.21 meters

Feel free to ask for more if needed or if you did not understand something.

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Steve weighs 18 more pounds than Ryan. If their weight totals 144 pounds, how much does Ryan weigh?
katrin2010 [14]

Answer:

Shouldn't the answer be 126?

Step-by-step explanation:

I'm pretty sure you just have to subtract 18 from 144.

3 0
4 years ago
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Kim bought 12 boxes of drinks He paid $15 for each box. There were 12 drinks in each box. Kim sold 3/4 of the drinks for $1.50 e
ella [17]

Answer:

what's the question ?

Step-by-step explanation:

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3 years ago
Multiple choice 10 points
liubo4ka [24]

Answer:

f'(x) = 5    x<4

      = 2x    4<x<6

     = 4         x>6

Domain is all real numbers except 4 and 6

Step-by-step explanation:

We need to find the derivative of the piecewise function

f'(x) = 5    x<4

      = 2x    4≤x≤6

     = 4         x>6

Is the function continuous at 4

f(4-) = 5(4) - 6 = 20-6 = 14

f(4+) = 4^2 -2 = 16-2 = 14    

this is continuous, so there is no problem with the continuity here

Is the function continuous at

f(6-) = 6^2 -2 = 36-2 = 34

f(6+) = 4(6)+10 = 24+10 = 34

this is continuous, so there is no problem with the continuity here

Now we need to check the derivatives

f'(4-) = 5

f'(4+) = 8

This is not continuous, so we get a piecewise definition for the derivative excluding 4

f'(6-) =12

f'(6+) =4

This is not continuous, so we get a piecewise definition for the derivative excluding 6

7 0
3 years ago
On the weekends, paul jogs 9/10 mile. on the weekdays, paul jogs 5/10 mile. how many more mile does paul jog on the weekends tha
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Paul jogs 4/10 miles on the weekends than on a weekday.
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3 years ago
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The probability that an archer hits a target when he shoots an arrow is 0.7. The archer shoots two
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Answer:

The tree diagram is shown in the tree diagram is shown.

If the probability to hit is 0.7, then the probability to miss is 0.3.

P(hit, hit) = 0.7*0.7 = 0.49

P(hit, miss) = 0.7*0.3 = 0.21

P(miss, hit) = 0.3*0.7 = 0.21

P(miss, miss) = 0.3*0.3 = 0.09

6 0
4 years ago
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