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3 years ago

A cyclist travels 12 km from home to the park.

Mathematics

2 answers:

Volgvan3 years ago

5 0

Answer:

Step-by-step explanation:

12 km to the park in 30 mins so multiply the 12 km by 2 to make a whole hour.

12*2= 24 km/h

Leno4ka [110]3 years ago

3 0

Answer:

Speed = 24 km/h

Step-by-step explanation:

Speed = Distance / Time

A cyclist travels 12 km from home to the park.

She leaves home at 13:00 and arrives at the park at 13:30.

Distance = 12 km

Time = 0.5 Hours

Speed = 12 / 0.5

Speed = 24 km/h

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3400000 in scientific notation

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3 years ago

A person places $82100 in an investment account earning an annual rate of 4.3%, compounded continuously. Using the formula V = P

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3 years ago

Insert two rational number between 1.3 bar and 1.4 bar

jok3333 [9.3K]

General method:

Given numbers are 1.3 bar and 1.4 bar

1.3 bar = 1.333...
1.4 bar = 1.444...

Two rational numbers between them

= 1.3222... and 1.43333...

Mean Method:

Let X = 1.333... → → →eqn(i)

since the periodicity is 1 then multiply eqn(i) with 10

⇛10×X = 1.333...×10

⇛10X = 13.333... → → →eqn(ii)

Subtract eqn(ii)-eqn(i)

10X = 13.333...

X = 1.333...

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____________

⇛9X = 12

⇛X = 12/9

⇛X = 4/3

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since the periodicity is 1 then multiply eqn(i) with 10

⇛10×X = 1.444...×10

⇛10X = 14.444...→ → →eqn(ii)

Subtract eqn(ii)-eqn(i)

10X = 14.444...

X = 1.444...

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Now we have 12/9 and 13/9

The rational number between them by mean method (a+b)/2

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⇛{(24+25)/18}/2

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⇛49/36

Answer: The two rational numbers between them are 25/18 and 49/36.

also read similar questions: INSERT TWO RATIONAL NUMBERS BETWEEN 2 AND 3. How to find them?

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