1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Vsevolod [243]
1 year ago
7

David is three time as old as Joseph after 3 years David will be only twice as old as process will be there find their present a

ges​
Mathematics
1 answer:
kvasek [131]1 year ago
5 0

Answer:

Joseph's present age=3 yrs

David's present age=9 yrs

Step-by-step explanation:

Let Joseph's present age be x.

David's present age=3x

__________________

Ater 3 yrs,

Joseph's age=x+3

David's age=2(x+3)

Also, we can add 3 to David's present age to get age After 3 yrs. So, David's age after 3 yrs would also be 3x+3.

Now, balance them.

3x+3=2(x+3)

3x+3=2x+6

x=3

D"s prsent age=9

J's present age=3

You might be interested in
What is the value of d/dx (6/x^4 + 1/x^2) at x = -1 ?
zheka24 [161]

Answer:

\frac{d}{dx}\left(\frac{1+x^4+x^6}{x^2+x+1}\right)=\frac{4x^7+5x^6+8x^5+3x^4+4x^3-2x-1}{\left(x^2+x+1\right)^2}

Step-by-step explanation:

7 0
3 years ago
35% of what number is 35? <br> Please solve all steps using a=p•w
son4ous [18]
35% * X = 35
first you would change 35% to .35
then the equation would be .35 * X = 35
next you would divide .35 from both sides making the equation- 
x = 100

then to check plug it in 
.35 * 100 = ?
.35 * 100 = 35
want me to message you how to i did it?
4 0
3 years ago
I don't understand rational and irrational numbers
PSYCHO15rus [73]

A rational number is a number which can be expressed as a fraction whose numerator and denominator are both integers and whose denominator is not equal to zero. Rational numbers include all integers, fractions, mixed numbers, and some decimal numbers.

 

Note : All terminating and repeating decimal numbers are rational numbers because those numbers can be expressed as a fraction. On the other hand, a non repeating number and non terminating decimal, like square root of 2, is an irrational number.  


\dfrac{7}{16} \ as \ a \ decimal = 0.4375


Set \ up \ the \ long \ division. 


Calculate \ 70 \div 16, \ which \ is \ 4  \ with \ a \ remainder \ of \ 6.&#10;&#10;


Bring \ down \ 0, so \ that \ 60 \ is \ large \ enough \ to \ be  \ divided \ by \ 16.&#10;&#10;


Calculate \ 60 \div 16, which \ is \ 3 \ with \ a  \ remainder \ of \ 12.&#10;&#10;


Bring \ down \ 0, so \ that \ 120 \ is \ large \ enough \ to \ be \ divided \ by \ 16.&#10;&#10;


Calculate \ 120 \div 16, which \ is \ 7 \ with \ a \ remainder \ of \ 8.&#10;&#10;


Bring \ down \ 0, so \ that \ 80 \ is \ large \ enough \ to \ be \ divided \ by \ 16.



Calculate \ 80 \div 16, which \ is \ 5. &#10;
<span>
</span>

Decimal = 0.4375&#10;

4 0
3 years ago
Annie has a compost pile that produces 12 pounds of compost a day from yard waste. Which function expresses the amount of compos
Masteriza [31]
The total amount of compost Annie gets is 12 every day
c equals 12 every d
c = 12d
7 0
3 years ago
Read 2 more answers
Helpppp!!!!!!!!!!!!!??
maxonik [38]

Answer:

jcigcgcycogcogchocohcuf

8 0
3 years ago
Other questions:
  • Does anything multiply to -177 and add to 0?
    10·1 answer
  • If a car travels 172 miles in 4 hours how long will it take to travel 387 miles
    5·1 answer
  • In a school, the ratio of boys to girls is 4:3. There are 216 boys. How many girls are there?
    5·1 answer
  • What are the coordinates of the midpoint of the segment with endpoints at (-3, -4) and (5, 8)?
    15·1 answer
  • Is the answer A,B,C or D?
    15·1 answer
  • Sam the scout is going on a camp out with his boy-scout troop. There are large tents that sleep 6 boys and small tents that slee
    12·1 answer
  • 3+3 what is it i need help please
    8·1 answer
  • Please help!!! I need someone to use some brain power
    13·1 answer
  • 11 × 34.12 what is it?
    15·1 answer
  • Which scatter plot best illustrates a strong positive correlation?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!