saralAdhikari saralAdhikari

24-08-2020
Mathematics

contestada

X + Y is equal to 5 x minus Y is equal to 4 find the value of find the value of x square minus y square

Respuesta :

eunice1234 eunice1234

24-08-2020

Answer: 20

Step-by-step explanation:

x+y=5

x-y=4

---------

x+y=5

x=4+y

--------

(4+y)+y=5

4+y+y=5

4+2y=5

2y=1

y=0.5

x=4.5

---------

x²-y²=(4.5)²-(0.5)²=20.25-0.25=20

Answer Link

Otras preguntas

Pollution in the _ Will have not he greatest effect on human health A Troposphere B stratosphere C mesosphere D thermosphere

How do I determine the slope of the line using a graph

A latter leans agains the side of a house.The top of the ladder is 24ft from the ground. The bottom of the lAdder is 7ft from the side of the house. Find the le

Jon makes a map of his neighborhood for a presentation. The scale of his map is 1 inch:125 feet. How many feet do 4 inches represent on the map? Answer-500 fee

Please answer this question only if you know it!

A 0.500 L bottle of water contains 8.82 × 10–7 mL of benzene. What is the concentration of benzene in ppmv?

Why does the speaker in Sonnet 18 by Petrarch repeatedly use negative words and phrases ? A) The poem is about his inability to spend time with his beloved. B

Given a=-3,b=4 and c=-5, evaluate a-b-c A.-12 B.-6 C-2

what do the articles of the constitution explicitly outline? A- a fixed definition of citizenship B- a bicameral nation legislature C- the protection of indivi

Why did Washington try to keep the United States neutral in foreign policy? A) He believed that the United States was so strong that it did not need foreign all