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3 years ago

4. What is the circumference of a circle with a radius of 4 cm?

Mathematics

1 answer:

zepelin [54]3 years ago

8 0

Answer:

25.13

Step-by-step explanation:

2 π r

2 x π x 4 =25.13

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Trigonometry problem

vagabundo [1.1K]

Answer:

800 m

Please find attached the working of this question

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4 years ago

There were 120 multiple choice questions.a candidate was given 1mark for each correct answercand penalised ¼ mark for every wron

Alexus [3.1K]

120-1/4x=80

-1/4x=-40

1/4x=40

x= 10

120-1/4(10)=80

80=80

80 correct answers

8 0

4 years ago

The manager of an accounting department wants to form a two

Y_Kistochka [10]

Answer: 153

Step-by-step explanation:

When we have a group of N elements, the total number of combinations of K elements ( K ≤ N) is:

$C (N, K) = \frac{N!}{(N-k)!*K!}$

Where N! = N*(N - 1)*(N - 2)*...*2*1

In this case, we have a group of 18 people (then N = 18) and we want to see how many different combinations of 2 we can make (K = 2).

Using the above equation we get:

$C(18, 2) = \frac{18!}{(18 - 2)!*2!} = \frac{18!}{16!*2!} = \frac{18*17}{2} = 9*17 = 153$

There are 153 different ways in which the manager can do this.

5 0

3 years ago

What is the equation of this graphed line?

Anettt [7]

Download here

Because the certain point

3 0

3 years ago

Suppose a city with population 800 comma 000 has been growing at a rate of 5% per year. If this rate continues, find the popul

Tom [10]

Answer: 1,833,615

Step-by-step explanation:

Hi, to answer this question we have to apply an exponential growth function:

A = P (1 + r) t

Where:

p = original population

r = growing rate (decimal form)

t= years

A = population after t years

Replacing with the values given:

A = 800,000 (1+ 5/100)^17

A = 1,833,615

Feel free to ask for more if needed or if you did not understand something.

8 0

3 years ago