whalep3 whalep3
  • 25-01-2021
  • Mathematics
contestada

find two numbers if there sum is 7.2 and their difference is 2.7

Respuesta :

vialia
vialia vialia
  • 25-01-2021

Answer:

2.25 and 4.95

Step-by-step explanation:

x + y = 7.2

x - y = 2.7

x = 7.2 - y

x - y = 2.7

(7.2 - y) - y = 2.7

7.2 - 2y = 2.7

-2y = 2.7 - 7.2

-2y = -4.5

-2y/-2 = -4.5/-2

y = 2.25

x + y = 7.2

x + 2.25 = 7.2

x = 7.2 - 2.25

x = 4.95

Check: 4.95 and 2.25

x + y = 7.2

(4.95) + (2.25) = 7.2

7.2 = 7.2

x - y = 2.7

(4.95) - (2.25) = 2.7

2.7 = 2.7

Answer Link
Аноним Аноним
  • 25-01-2021

Answer:

x+y=7.2

x-y=2.7

Step-by-step explanation:

equation

x+2.7+x=7

2x=4.3

x=4.3/2

y=7-4.3/2

Answer Link

Otras preguntas

trace the arab-israeli conflict between 1947-1980. why has this conflict been so difficult to resolve?
why were the romans able to expand their control of italy?
What provisions of governing were in the individual state constitutions? (Hint: Choose more than one.) Unlimited gov Unification of powers Individual rights Sel
Can a theocracy co-exist with monarchy
It Was The Abyssinian Crisis That Destroyed The League Of Nations As An Effective Peacekeeping Body?
What Are The Major Objectives Of Fiscal Policy In India?
Can a theocracy co-exist with monarchy
PLEASE HELP Question 7. 7. Refer to the illustration to answer Question 7. Which of the following has the highest energy? (Points : 3) gamma rays
What did Stalin agree to do in return for the Allied invasion of France? (5 points) disarm his forces once the Nazis were defeated invade Italy after the North
what fraction of 30 is 25?