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UNO [17]
2 years ago
12

Charlie and Daniella each began a fitness programme. On day one, they both ran 500m. On each subsequent day, Charlie ran 100m mo

re than the previous day whereas Daniella increased her distance by 2% of the distance run on the previous day.
(a) Calculate how far Charlie ran on day 20 of his fitness programme. (1) Daniella ran on day 20 of her fitness programme. On day n of the fitness programmes, Daniella runs more than Charlie for the first time.

b) Find the value of n
Mathematics
1 answer:
alukav5142 [94]2 years ago
8 0

Answer:

a) 2400m on the 20th day for Charlie.

1) 728.41m of 20th day for Daniella.

Didn't find n, sorry.

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This question confuses me any help​
topjm [15]

Answer:

<u>42.25π m²</u>

Step-by-step explanation:

Let's solve!

⇒ Take the radius of the lawn to be 'r'

===========================================================

Then, area of the path equals :

⇒ Area of (lawn + path) - Area of lawn

⇒ π (r + 2)² - πr² = 30π

⇒ πr² - πr² + 4πr + 4π = 30π

⇒ 4πr = 26π

⇒ r = 6.5 m

===========================================================

Area of the lawn :

⇒ Area = πr²

⇒ Area = π × (6.5)²

⇒ Area = <u>42.25π m²</u>

3 0
1 year ago
Alisa had 1/2 L of juice in a bottle. She drank 3/8 L of her juice. What
Elina [12.6K]

Answer:

3/16

Step-by-step explanation:

By drinking 3/8 liters of 1/2 liter juice it means the question tests the ability to multiply fractions. Since she drank 3/8*1/2=3/16

We multiply the numerators and denominators separately ie 3*1/(8*2)=3/16

Therefore, Alisa consumed 3/16 or 0.1875 or 18.75% of the juice.

Since the question was in fractional form, it is prudent to also express answer in fractions hence the right answer is 3/16

3 0
2 years ago
The health department estimates that eight vials of malaria Serum will treat 100 people. at this rate, how many vials are requir
lara [203]
Using butterfly method, it is 14 vials

5 0
2 years ago
Suppose that you are in a class of 33 students and it is assumed that approximately 15% of the population is left-handed. (give
AysviL [449]
15% of 33 =

= 15% * 33

= 0.15 * 33

= 4.950 students in that class are left-handed
3 0
3 years ago
र<br> Solve the equation<br> y + 3 = -y + 9<br> O y= 1<br> O y=3<br> O y=6<br> O y=9<br> र
Leto [7]

Answer:

y=3

Step-by-step explanation:

y + 3 = -y + 9

y + y = 9 - 3

2*y = 6

y = 6/2

y = 3

6 0
2 years ago
Read 2 more answers
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