![oclexieaocovtg07](/avatars/18578.jpg)
oclexieaocovtg07
22.06.2020 •
Mathematics
'X' years ago, Rakesh's age was twice his brother's age and '4X' years ago, Rakesh's age was thrice his brother's age. If it is known that 'X' is a natural number, then what can be the absolute difference between their present ages? plz answer it fast it's urgent
Solved
Show answers
More tips
- H Health and Medicine Want to Lose Weight? Gain Muscle without Damaging Your Health!...
- F Family and Home Parquet or laminate, which is better?...
- L Leisure and Entertainment How to Properly Wind Fishing Line onto a Reel?...
- L Leisure and Entertainment How to Make a Paper Boat in Simple Steps...
- T Travel and tourism Maldives Adventures: What is the Best Season to Visit the Luxurious Beaches?...
- H Health and Medicine Kinesiology: What is it and How Does it Work?...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
- L Leisure and Entertainment History of International Women s Day: When Did the Celebration of March 8th Begin?...
- S Style and Beauty Intimate Haircut: The Reasons, Popularity, and Risks...
- A Art and Culture When Will Eurovision 2011 Take Place?...
Answers on questions: Mathematics
- M Mathematics Triangles A B C and F D E are shown. Angle A C B is 83.5 degrees. Angle D E F is 62.7 degrees. The lengths of sides B C and D E are congruent. The lengths of sides...
- M Mathematics Complete the inequality with , , , ,is greater than, comma, is less than, comma or ==equals. 2^52 5 2, start superscript, 5, end superscript 5^25 2 5, squared...
- B Biology Microevolution can be said to have taken place when a. a population experiences a shift in allele frequencies. b. a feature of an individual animal changes through...
- E English Read the text, then answer the question that follows: Wild animals as viewed from a mountain camp—Camille Grant, October 2011 Through my binoculars, I viewed a group...
- G Geography Conductresearch on the impact of drought on people, the economy and the environment....
Ответ:
The difference must be a multiple of 6
Step-by-step explanation:
R is Rakesh's age and B is the age of the brother.
the equations we have are:
(R - X) = 2*(B - X)
(R - 4X) = 3*(B - 4X)
where X must be a natural number.
we can write it as
(R - B) = -X + B
(R - B) = 2B - 8X
-X + B = 2B - 8X
B = 7X
then:
R - 7X = 6X
This means that the difference between their ages is a multiple of 6, for example, if the difference between them is 12 years, we have X = 2
R - 2 = 2*B - 4
R - 8 = 3*B - 24
in the first equation:
R = 2*B - 2
we replace it in the second eq:
2*B - 10 = 3*B - 24
B = 14 = 7*X = 7*2
and R = 14 + 12 = 26
Ответ:
5
Step-by-step explanation:
Since the highest power of x is 5, the degree of the polynomial x
3
−9x+3x
5
is 5.