abdinasir122 abdinasir122
  • 13-12-2016
  • Mathematics
contestada

when kara and Lauren add their ages, the sum is 20 when they multiply their ages, the product is 99 what is difference in their ages?

Respuesta :

MathisLif3
MathisLif3 MathisLif3
  • 13-12-2016
x+y=20
xy=99
Let a+b be denoted a,b
20 = 1,19 2,18 3,17 4,16 5,15, 6,14 7,13 8,12 (9,11) ..Stop
99=3^2*11
Thus the ages are 11 and 9 with a difference of 2.
Answer Link

Otras preguntas

How do I write n+5n= 12c-c= and -4j-1-4j+6= in simplest form?
Are there any personifications in the poem jimmy jet and his TV set?
WHERE DID MOST AMERICANS LIVE IN THE EARLY 1800S
a rectangle has an area of 30 square meter and a perimeter of 34 meters. what are the dimensions of rectangle?
What is the simplest form of the fraction 4/10
A force of 200 N is required to keep an object sliding at a constant speed of 2 m/s across a rough floor. How much power is being expended to maintain this moti
7 qt. 2c. =______ c.
Four things that were damaged ween mount etna erupted were
Mary has 12 marbles 3/12 of the marbles are yellow and 2/12 of the marbles are blue.The rest of the marbles are green.How many marbles are green?
How do I write n+5n= 12c-c= and -4j-1-4j+6= in simplest form?