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RoseWind [281]
3 years ago
15

Express the form 3:15 as n:1 make n a decimal

Mathematics
1 answer:
dimaraw [331]3 years ago
8 0

Answer:

0.2 = n

Step-by-step explanation:

Since we want to express 3:15 as n:1, we can say that they are equal ratios, so

3:15 = n:1. Next, ratios can be written as fractions, so 3/15 = n/1 .

3/15 = n/1

Since anything divided by 1 equals itself, we can write this as

3/15 = n

0.2 = n

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Over ten years, the population of fish in a lake increases by 3%. After the increase, there are 10,094 fish. Which expressions a
Dominik [7]

Answer:

9800 Fish

Step-by-step explanation:

According to The question,

  • Given, the population of fish in a lake increases by 3% for over ten years, after the increase there are 10094 fish .

The number of fish ten years before is 10094 * \frac{100}{103} ⇔ 9800 fish

3 0
3 years ago
A cab in NYC charges you $1.25 a mile and a flat fee of $4 to ride in the cab. A cab in Chicago charges you $0.75 a mile but a f
Vikentia [17]

Answer:

After 4 miles driven by cab the amount would be same in both cities.

Step-by-step explanation:

Let the number of miles be 'x'.

Given:

In NYC

Flat fee of cab = $4

Per mile charge = $1.25

Total cab charges is equal to sum of Flat fee of cab and per mile charge multiplied by number of miles.

Framing in equation form we get;

Total cab charges in NYC = 4+1.25x

In Chicago

Flat fee of cab = $6

Per mile charge = $0.75

Total cab charges is equal to sum of Flat fee of cab and per mile charge multiplied by number of miles.

Framing in equation form we get;

Total cab charges in Chicago = 6+0.75x

Now we need to find number of miles driven so that the amount could same in both cities.

Total cab charges in NYC = Total cab charges in Chicago

4+1.25x=6+0.75x

Combining like terms we get;

1.25x-0.75x=6-4\\\\0.5x=2

using Division Property we will divide both side by 0.5 we get;

\frac{0.5x}{0.5} =\frac{2}{0.5} \\\\x=4

Hence After 4 miles driven by cab the amount would be same in both cities.

7 0
3 years ago
Please help!!<br> I need it
anygoal [31]

Answer:

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Step-by-step explanation:

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3 0
3 years ago
50 POINTS GIVEAWAY!!!!!
Tema [17]

Answer:

1

Step-by-step explanation:

9 - 3/(1/3) + 1 = 1

4 0
3 years ago
Read 2 more answers
A motorcyclist traveling at 30.7 km/h accelerates after passing a sign post marking the city limits. If it takes 4.9 seconds for
MissTica

Remark

Writing down the givens for these questions is almost a command. You must know which equation of the big 4 to use. The givens + what you want to find will determine the equation.

Givens

vi = 30.7 km/hr = 30.7 km/hr *[1000m/1km]*[1hr/3600sec] = 8.52m/sec

vf = 120 km/hr = 120 km/hr * [1000 m/1 km]*[1h/3600 sec] = 33.3 m/s

t = 4.9 seconds

d = ???

Formula

d = (vi + vf)*t/2

Solve

d = ( 33.3+8.52 )*4.9/2

d = (41.85333)*4.9/2

d = 205.02/2

d = 102.51 m<<<Answer


8 0
3 years ago
Read 2 more answers
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