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
bazaltina [42]
2 years ago
12

2 years ago, father age was nine times the son age but 3 years later it will be 5 times only. find the present ages of the fathe

r and son​
Mathematics
1 answer:
Goshia [24]2 years ago
3 0

Answer:

<u><em>The Father is currently 47 and the Son is 7</em></u>

Step-by-step explanation:

Let F and S be the present ages of Father and Son, respectively.

We are told that <u>(F-2) = 9(S-2)</u> [2 years ago, father age was nine times the son age]

We also learn that <u>(F+3) = 5(S+3)</u>  [3 years later it will be 5 times only]

Take the first expression and isolate one of the variables (S or F).  I'll isolate F:

(F-2) = 9(S-2)

F = 9S - 16

Now use this in the second expression:

(F+3) = 5(S+3)

((9S-16)+3) = 5(S+3)

9S-13 = 5S+15

4S = 28

S = 7

Since F = 9S-16,

F = 9*(7)-16

F = 47

<u><em>Father is 47 and Son is 7</em></u>

CHECK:

Was the father 9 times the age of his son 2 years ago?

Father would have been 45 and son 5.  Yes, 9*5 = 45

In 3 years will he be 5 times older than his son?  Yes, Father would be 50 and son would be 10.  5*(10) = 50

You might be interested in
24 is 120% of what number?
laiz [17]
120÷100= 1.2
24÷1.2= 20
24 is 120% of 20
4 0
3 years ago
Factorise <br> x2 + 10x + 16
d1i1m1o1n [39]

Answer:

hope this helps, (x+2) (x+8)

Step-by-step explanation:

factor x^2 + 10x+16 using the AC Method

6 0
3 years ago
Read 2 more answers
Can someone like help
Wewaii [24]
You haven't shared all of the possible answers.  The graph you've shared has a y-intercept of 4, which differs from the y-intercept of <span>y=−1/2x+8.

Go on to the other 3 possible answers.  Which answer shows a y-intercept of 8 and a slope of -1/2?</span>
3 0
4 years ago
Determine if the matrix is symmetric.
Amanda [17]

Answer:

because this is equal to the given matrix, the given matrix is symmetric.

Step-by-step explanation:

A symmetric matrix is a square matrix which has same number of rows and columns. Square matrix is equal to transpose. Equal matrices have equal dimensions. The given matrix is symmetric because the rows and columns are equally distributed.

4 0
3 years ago
What type of transformation transforms (a, b) to ​(−a, b)​?
Vikentia [17]
Hello : 
<span>a reflection over the y-axis</span>
7 0
3 years ago
Read 2 more answers
Other questions:
  • Two less than five times a number is 28. what is the number
    8·2 answers
  • You work at a local grocery store. Your paychecks over the past 6 weeks were $56.05, $41.50, $22.50, $52.90, $49.85 and $31.00.
    6·1 answer
  • Please help!!!! 20 POINTS!
    7·2 answers
  • An observer (O) spots a bird flying at a 42° angle from a line drawn horizontal to its nest. If the distance from the observer (
    9·2 answers
  • Please answer<br> (the answer is probably more than 1 solution)
    13·1 answer
  • Solve this equation. <br> Leave the answer as an improper fraction. <br> 3x^2 + 2 = 11 - x^2
    14·1 answer
  • Write an equation in point-slope form of the line that passes through the point (4,7) and has a slope of -1
    9·1 answer
  • Seventh Grade Students
    9·1 answer
  • Tony Stark had 484 Iron Man suits. He wanted to divide them into groups of 22. How many groups of Iron Man suits were there?
    8·1 answer
  • An item is regularly priced at $31 . It is now priced at a discount of 35% off the regular price.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!