athenacamacho5305 athenacamacho5305

03-06-2020
Mathematics

contestada

4) The sum of two numbers is 39. Their
difference is 21. What are the two numbers?

Respuesta :

03-06-2020

Answer:

30 and 9

Step-by-step explanation:

x+y=39 , x-y=21

Solve for x:

x+y=39 , x-y=21

x= 30

Substitute x with 30:

(30)+y=39 , (30)-y=21

Solve for y:

y=9

Answer Link

Otras preguntas

How old are you if you were born in 1995 and its 2017?

1.operating systems of mobile devices can support full-scale software programs like Microsoft work or excel true or false? 2.mobile devices need to work within

If the composite functions f(g(x)) and g(f(x)) equal x then the function g is the __________ function of ff.

How do you solve the cubic square root of 80

⊥∪What is the sum? 1.3+(−2.4)

how far will a runner travel at an average speed of 5m/s for 20 minutes?

What is the most important thing to take into account when putting together a team?

*What is the cartoon saying about the U.S.? *Why does the U.S. need or want oil?

why did the spanish want to colonize the America's

Write a simplified polynomial expression in standard form to represent the area of the rectangle x+5 2x-4