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blondinia [14]
3 years ago
11

Write in km/h a speed of 18 km in 10 min

Mathematics
1 answer:
Elodia [21]3 years ago
5 0
1h=60min\to1min=\frac{1}{60}h\\\\\frac{18\ km}{10\ min}=\frac{18}{10}\ km/min=1.8\ km/min=1.8\times\frac{km}{\frac{1}{60}\ h}=(1.8\times60)\ km/h\\\center=\boxed{108\ km/h}
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The amount of available disk space on a digital video recorder changed from 81% to 9% after recording 12 episodes of a show. Eac
Colt1911 [192]

Answer:

The change in available disk space is −6% per episode

Step-by-step explanation:

Given that :

Available disk space changed from 81% to 9% after recording 12 episodes of a show

Each episode requires the same amount of disk space

Change in disk space =

Final % = 9%

Initial percentage = 81%

Change = final value - initial value :

(9 - 81)% = -72%

72% reduction in disk space

Space taken up per episode :

Reduction in space / number of episodes

= -72% / 12

=- 6%

4 0
3 years ago
Three bananas ånd two apples sell for $1.25. Five bananas and one apple sell for $1.50. Write a system of
lesantik [10]

Answer:

b= 25 cents

a= 25 cents

Step-by-step explanation:

b(5)+1(a) = 1.50

6 0
3 years ago
What is the value in millions of dollars of a downtown office building that cost 12 million dollars to build 20 years ago and de
Fudgin [204]

Answer:

The value in millions of dollars of a downtown office building that cost 12 million dollars to build 20 years ago and depreciated at 9% per year is $1819738.95

Step-by-step explanation:

Cost of building 20 years ago = 12000000

We are given that the cost depreciated at 9% per year

Formula : N(t)=N_0(1-r)^t

Where N(t)= Population after t years

N_0=Initial population=12000000

r= rate of depreciation=0.09

t = 20 years

Substitute the values in the formula:

N(t)=N_0(1-r)^t\\N(t)=12000000(1-0.09)^{20}

N(t)=1819738.95

Hence the value in millions of dollars of a downtown office building that cost 12 million dollars to build 20 years ago and depreciated at 9% per year is $1819738.95

4 0
3 years ago
Add 8 to the input and then multiplies by 5
pogonyaev

Answer:

y = 5(x + 8)

Step-by-step explanation:

The first step is to add 8 to the input, you get x + 8. Then you need to multiply that number by 5. An equation that represents that is y = 5(x + 8).

*You can't just write down y = 5x + 8 because you are multiplying the result of x + 8 by five, not multiplying x by 5, then adding 8.

3 0
3 years ago
Read 2 more answers
Which fractions are equivalent to 40%? Check all that apply
Lina20 [59]
Boosting this comment!
6 0
3 years ago
Read 2 more answers
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