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

Jewelry & coin company hires kelly ann to buy gems and precious metals from various sources on its behalf. In this relationship, jewelry & coin is.

the monthly price at Jolene dance studio

the monthly price at Jolene dance studio

industrialization on earth eventually heats our surroundings to temperatures that are higher than usual. industrialization in space habitats using exclusively s

A gas expands from 30 l to 50 l against a constant pressure of 1 atm. What is the calculated value for work? report your answer in kj to the nearest whole numbe

What evidence leads scholars to attribute pontormo’s deposition to the mannerist style?.

the solutions to a quadratic ecuation are x=2 or x=-3. what are the intercepts of the related quadratic function?

When a nonmetal is hit with a hammer it will crumble or break. Metals on the other hand will bend when it is hit. What physical property is indicated?.

Which soccer superstar recently launched play time sports-tech holdco, with plans to invest in sports technology around the world?.

which molecule has the most stored energyATPGlucoseOxygen or water