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

What is the difference between an index and a glossary

what temperature is 20 degrees lower than 6 degree celsius

The sonnet is written in the form.the rhyme scheme is

How do I find the valve of 2 ×3/4

For this job we need someone _____ is especially good at knot-tying? A. who B. him C. whom D. him or her

Give some information abt this, an essay if it’s possible! I will give u 20 points!

What kind of poem is this? "I blow through your hair kicking up dust everywhere And then I am gone."

Oliver and Sara shared a whole pizza. Oliver ate 1/3 of the pizza, and Sara ate 1/4 of the pizza. What fraction of the whole pizza did they eat?

Solve(X+2)/4=6 please

Write equations for the vertical and horizontal lines passing through the point , −9−7 .