bananarocks06
bananarocks06 bananarocks06
  • 11-05-2019
  • Mathematics
contestada

If a+b = 11 and a−b = 7, then ab

Respuesta :

MohamedSobhy MohamedSobhy
  • 11-05-2019

Answer is..

ab= 18

Explanation..

a + b = 11...---> a= 11-b

a -b = 7

11 - b - b = 7

11 - 2b = 7

2b = 18

b = 9

and a = 11 - 7

a = 2

So

ab = 2 * 9 =18

Answer Link

Otras preguntas

What was the Marshall Plan
what are the different ways in which power sharing among different communities is organised today
What property is 74.5*0=0
-20=-4x-6x How Do I Solve This Equation ?
the regular price of a calculator is $15.40. it goes on sale for 30% off the regular price. what is the amount of savings on the calculator
the regular price of a calculator is $15.40. it goes on sale for 30% off the regular price. what is the amount of savings on the calculator
Fill the blank, please: ....is the transfer of thermal energy between particles of matter that are touching.
Based on current immigration trends, which religion is most likely to increase in western Europe over the next twenty years?
How do i write 98.5 in scientific notation?
Why does convection occur only in fluids?