MATHEMATICS HIGH SCHOOL

What is the circumference of the following circle?
use 3.14 for pi for your answer
r=1

Answers

Answer 1
Answer:

Answer: 6.28 units

Step-by-step explanation:

     The circumference of a circle can be found with the formula C = 2πr where r is the radius. Here, we are given the radius and a different value for π (pi).

Given:

  C = 2πr

Substitute given values:

  C = 2(3.14)(1)

Multiply:

  C = 6.28 units

          The circumference of the given circle is  6.28 units.

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Please answer the question from the attachment.

The radian measure equivalent to -45º is _____.

Answers

(-π/4) ...... is the answer !!
2pi radians=360 degrees
ratio and proprtion thing  I guess

r/2pi=-45/360
r/2pi=-1/8
times both sides by 8pi
4r=-pi
divide both sides by 4
r=-pi/4

-pi/4 radians

Determine whether the following problem involves a permutation or combination.​ (It is not necessary to solve the​ problem.) How many different 33​-letter passwords can be formed from the letters Upper QQ​, Upper RR​, Upper SS​, Upper TT​, Upper UU​, Upper VV​, and Upper WW if no repetition of letters is​ allowed?

Answers

Answer:

Permutation

Step-by-step explanation:

Since we are talking about passwords the order of the letters matters, i.e, the pasword UpT is different to the pasword pUT. Therefore, the problem involves all the permutations of 33 letters, from the given letters, where no repetitions of letters are allowed.

Three scenarios are given in parts a through c below. For each​ scenario, determine the sampling method used by the managers. ​a) The managers select a single branch at random and survey every employee of that branch. A. The managers used a systematic sample. B. The managers used a multistage sample. C. The managers used a cluster sample. D. The managers used a stratified sample. E. The managers used a simple random sample. ​b) The managers use the company​ e-mail directory to contact every 3030th employee on the list. Choose the correct sampling method below. A. The managers used a cluster sample. B. The managers used a multistage sample. C. The managers used a stratified sample. D. The managers used a systematic sample. E. The managers used a simple random sample. ​c) The managers split the company into​ divisions, with each division containing employees that have similar jobs. Within each​ division, they select a SRS of employees to contact. Choose the correct sampling

Answers

Answer:

1. C. The managers used a cluster sample

2.  B)The managers used a systematic sample.

3. The managers used a stratified sample.

Step-by-step explanation:

1. In a cluster sampling method, the population would be divided into several small units called cluster by the researcher. Within these clusters we randomly pick one or more to observe.

2. In systematic sampling we select elements from an ordered sampling frame.

3. In stratified sampling, the population is divided into several stratas and the researcher then selects randomly to complete the sampling process

Solve for x. 8/9x=32

Answers

Answer:

0.44444444444

Step-by-step explanation:

Increase £16870 by 3%
Give your answer rounded to 2 DP

Answers

New value =

16,870 + Percentage increase =

16,870 + (3% × 16,870) =

16,870 + 3% × 16,870 =

(1 + 3%) × 16,870 =

(100% + 3%) × 16,870 =

103% × 16,870 =

103 ÷ 100 × 16,870 =

103 × 16,870 ÷ 100 =

1,737,610 ÷ 100 =

17,376.1

Rounded to 2 DP: 17376.10

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Hope this helps! Stay safe, have a good day :D

Answer:

17376.1 euros

Step-by-step explanation:

100%=16870

103%=x

103% x 16870=1737610/100=17376.1

Prove that:{ \sqrt { n } }^{ { \sqrt { n } }^{ \sqrt { n } } }=\sqrt { { n }^{ \sqrt { { n }^{ \sqrt { n } } } } }

Answers

Sorry for the quality :D
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