Concebott6jo Concebott6jo

13-07-2016
Mathematics

contestada

the sum of two numbers is 51 and the difference is 29 . what are the numbers?

Respuesta :

apologiabiology apologiabiology

13-07-2016

x+y=51
x-y=29

add equations
x+y=51
x-y=29 +
2x+0y=80

2x=80
divide 2
x=40
sub
x+y=51
40+y=51
y=11

they are 40 and 11

Answer Link

Otras preguntas

What were the Mycenaean people like?

NEED HELP PLEASE! Now that you have worked through a lot of material that includes these basic patterns, and you have compared grammatically correct and incorre

If 6.500 g of C6H6 is burned and the heat produced from the burning is added to 5691 g of water at 21 °C, what is the final temperature of the water?

HELP ME!!! Answer in Scientific Notation and explain and show work.

find the slope of the graph and the unit rate

When kids construct a whole world around something they believe, it is called ____. a. imagination b. schema c. scaffolding d. staging

Each month, Helder volunteers x hours at the hospital and 8 hours at the local food bank. To find how many hours he will spend volunteering over 3 months, Hel

Idk how to solve this question

how js economic activity determined in free enterprise system

how many cups of sorbet are used in. 8 cups of punch sorbet is 15%