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
Hitman42 [59]
3 years ago
11

The sum of reciprocals of rehman’s ages 3 years ago and 5 years from now is 1/3. Find his present age

Mathematics
1 answer:
Afina-wow [57]3 years ago
6 0

Answer:

His age is 7 years.

Step-by-step explanation:

Let Rehman's  present age be x years.

1 / (x - 3) + 1 /(x + 5) = 1/3

Multiply through by the LCD 3(x - 3)(x + 5):

3(x + 5) + 3(x - 3) = (x + 5)(x - 3)

3x + 15 + 3x - 9 = x^2 + 2x - 15

x^2 + 2x - 6x - 30 + 9 = 0

x^2 - 4x - 21 = 0

(x - 7)(x + 3) = 0

x = 7  (answer).

You might be interested in
Find the equation of a line that passes through the point (0,1) and has a gradient of 2.
Usimov [2.4K]

Answer:

  • y = 2x + 1

Step-by-step explanation:

Given point (0, 1) and the slope m = 2

<u>Use point- slope form to find the equation of the line:</u>

  • y - y₁ = m(x - x₁)
  • y - 1 = 2(x - 0)
  • y - 1 = 2x
  • y = 2x + 1
6 0
2 years ago
Agustín fabrica artículos de cuero y los vende con un incremento del 8% de su costo. Si en su última campaña utilizó un cuero de
nadezda [96]

Answer:

El aumento del precio de costo único equivalente es un aumento del 20,96% en el precio de costo

Step-by-step explanation:

Los parámetros dados son;

El porcentaje de aumento en el precio de costo que Augustin vende artículos de cuero = 8%

El aumento adicional de Augustin se aplica cuando usó cuero de mayor calidad = 12%

Sea x el precio de costo

Tenemos, el primer precio de venta = 1.08 × x

El precio de venta del cuero de alta calidad = 12% adicional al precio de venta anterior

∴ El precio de venta del cuero de alta calidad = 1,12 × 1,08 × x = 1,2096 × x

Por lo tanto, el precio de venta del cuero de alta calidad = (1.2096 × 100)% de x = 120.96% de x, lo que da;

El aumento del precio de costo único equivalente = (120,96% - 100%) aumento en x = 20,96%

∴ El aumento del precio de costo único equivalente = 20,96% de aumento en el precio de costo.

6 0
3 years ago
Plz help!!! ASAP! GIVE BRAINLIEST AND GIVING POINTS!!!!!
Studentka2010 [4]

Answer:

-8

Step-by-step explanation:

-8m⁴ n⁴

m = 0.5 = 1/2

n = 2

Substitute

-8 * (1/2)⁴ * (2)⁴

-8 * (1/16) * (16)

-8

4 0
2 years ago
Trail mix made for three people uses 3 cups of almonds, 1 cup of raisins and 1/3 cup of chocolate chips. If the same ratio of in
kvv77 [185]
Hello!

Since this amount we are given an amount we need for 3 people, we just multiply each amount by four to get to 12.

12 cups of almonds
4 cups of raisins
1 1/3 cups of chocolate chips

I hope this helps!
8 0
3 years ago
Read 2 more answers
Ms. Campbell is hosting a toy drive
Ber [7]

Answer:

whos your teacher ? i had a teacher that named ms.campbell

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • Can an equilateral triangle ever be a right triangle too?
    13·2 answers
  • The length of a rectangle is four times it's width and has an area of 1024cm squared. Work out the width of the rectangle
    11·1 answer
  • What is the equation in point slope form of a line that is parallel to the given line and passes through the point (4,1)
    10·1 answer
  • If the value of a tv is $1500, and it's value decreases by 14% each year, how do I write a function that represents the value y
    11·2 answers
  • HELP!!!! I NEED HELP WITH THIS.
    8·1 answer
  • 9)
    11·1 answer
  • Help me asap
    15·2 answers
  • Pls do this.... it will mean a lot to me
    11·2 answers
  • Emmy baked 18 cookies with 3 scoops of flour. With 4 scoops of flour, how many cookies can Emmy bake? Assume the relationship is
    8·1 answer
  • How would I solve for x on this question
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!