Welcome90 Welcome90

03-06-2020
Mathematics

contestada

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

OkBroomar OkBroomar

03-06-2020

Answer:

30 and 9

Eeexplination;

Answer Link

Otras preguntas

Help me out with this one!

Hello. My name is Inigo Montoya. You killed my father. Prepare to die. I was eleven years old. And when I was strong enough, I dedicated my life to the study o

importance of religious tolerance

The number of years of healthy life expected, on average, in a given population is the disability-adjusted life years (dalys). a. True b. False

what's better cod liver oil or fish oil?

Not sure I need help

how much is 5.6-3.5

A therapist challenges what she sees as her client's irrational and self-defeating beliefs. she uses persuasion, confrontation, challenge, demands, theoretical

Mrs. rifkin has 84 oranges. 24 of her oranges were rotten. the rest were either ripe or unripe. there were 18 more ripe oranges than unripe oranges. find the ra

Write two division problems related to the multiplication problem below 8 times (-2)=-16