quallt5157 quallt5157
  • 15-02-2021
  • Mathematics
contestada

Juan es siete años mayor que Laura. El producto de sus edades es 294 años.

¿Que edad tiene cada uno

Respuesta :

fichoh
fichoh fichoh
  • 20-02-2021

Answer:

Laura = 14 Years

Juan = 21 years

Step-by-step explanation:

Let :

Laura's age = x

Juan's = x + 7

Product of their ages = (x) * (x + 7) = 294

x² + 7x = 294

x² + 7x - 294 = 0

x² + 21x - 14x - 294 = 0

x(x + 21) - 14(x + 21) = 0

(x + 21) = 0 or (x - 14) = 0

x = - 21 or x = 14

Age can't be negative

Hence, x = 14

Laura = 14 years

Juan = 14 + 7 = 21 = 21 years

Answer Link

Otras preguntas

In triangle ABC, the length of side AB is 18 inches and the length of side BC is 26 inches. Which of the following could be the length of side AC? A. 46 inches
[tex]10 \div 2 = [/tex]5​
Solve each equation for the specified variable 2d-3f=9 solve for f
If 5.9 × 10²⁵ molecules of CO₂ are produced in a combustion reaction, how many liters of CO₂ is produced? (The density of CO₂ is 1.98 kg/m³ and 1 L = 1 dm³).
Please answer this correctly without making mistakes
Why are emotionally charged events more likely to be remembered?​
in the given figure angle 1 is equal to angle 2 then the measurements of angle 3 and angle 4 are​
Solve. x2 – 2x – 35 = 0 Do you know the answer
Simplification of properties rational exponets
Political reforms of the progressives included all of the following except a. new types of city governments b. changes in the election of Senators to Congress c