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3 years ago

8

Need help on number 15,16,17 and 18

1 answer:

Nat2105 [25]3 years ago

4 0

15. Minutes in 365 days.
First, there are 60 minutes in an hour and 24 hours in a day. So there are 1440 minutes in a day. Multiply that by the 365 days, and you get: 1440 x 365 = 525,600.

16. Not absolutely sure about this one, but i reckon it's 16/31, as there are 16 odd days.

17. Area of a triangle is 1/2 x h x b
Now the two shaded area are = the unshaded area. So it's only one triangle, really. So it's 6 x 8 divided by 2 = 24cm²

18. 82 l in ml = 82,000

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Verizon [17]

Answer:

$\frac{dT}{dt} = -0.05\;min^{-1} (T-70\ºF)$

Step-by-step explanation:

Hi!

Lets call:

T = temprature of the object

T₀ = temperature of surroundings

t = time

The rate of change of T is its derivative with respecto to time. If T > T₀, the object looses heat, so T decreases. Then, being k > 0:

$\frac{dT}{dt} = -k(T-T_0) \\$

In this case T₀ = 70ºF and k = 0.05/min. Then the differential equation is:

$\frac{dT}{dt} = -0.05\;min^{-1} (T-70\ºF)$

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3 years ago

Celia sells calendars for fundraiser. Each calendar cost $9. She sells 16 calendars to her family members and 14 calendars to th

Sunny_sXe [5.5K]

Answer:

Since Her goal is to earn $ 300 , but now she is earning only $270 ,Hence Celia will not achieve her goal .

Step-by-step explanation:

Given as :

The cost of each calendar = $ 9

The number of calendar sold to the family = 16

The number of calendar sold to the neighborhood = 14

So, Total number of calendar sold by Celia = The number of calendar sold to the family + The number of calendar sold to the neighborhood

i.e Total number of calendar sold by Celia = 16 + 14 = 30

∵ The cost of each calendar = $ 9

∴ The cost of 30 calendar = $ 9 × 30 = $ 270

Since Her goal is to earn $ 300 , but now she is earning only $270 ,Hence Celia will not achieve her goal . Answer

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3 years ago

10 1/4 divided by 151 3/16

Svetlanka [38]

10 1/4 / 151 3/16 = 4/59

Have a great day :)

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Step-by-step explanation:

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3 years ago

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gogolik [260]

Answer:

6

Step-by-step explanation:

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