miajory miajory

10-01-2020
Mathematics

contestada

The sum of two numbers is 19 and their difference is 55 what are the two numbers

Respuesta :

13-01-2020

Answer: x = 18 ; y = -18

Step-by-step explanation:

x + y = 19

x - y = 55

x - y = 55

x = 55 + y

55 + y + y = 19

55 + 2*y = 19

2*y = 19 - 55

2*y = -36

y = -36 / 2

y = -18

x + y = 19

x - 18 = 19

x = 19 + 18

x = 37

Answer Link

Otras preguntas

Akira estimated that a tree was 40 years old. The true age of the tree was 47 years old. Which expression can be used to calculate the percent error in Akira’s

The __________ is the book of scripture in Islam

what is 7a - 3 = 3 + 6a

A truck driver drove 120 miles in 1 3/4 hours. What is the speed of the truck in miles per hour? PLEASE HELP

64/143 - 21/208 what does it equal to and how?

Why are amoebas more likely to use endocytosis than red algae? (2 points) Amoebas live in harsh environments and need to form endospores through endocytosis, w

If rain from a thunderstorm falls into a mountainous area, in what order will the rainwater flow through the surrounding geographic features? A.ocean → watershe

What is the common denominator of 3/8, 3/9, 3/10.

Which statement describes a common trait of the three Reconstruction Amendments?

Scott calculated a 20% discount on a sale item by finding 80% of the price. Why does this make sense?