nooneneedstoknow1234 nooneneedstoknow1234
  • 12-02-2022
  • Mathematics
contestada

find two numbers if their sum is 7.2 and their difference is 2.7

Respuesta :

giadanguyen
giadanguyen giadanguyen
  • 12-02-2022

Answer:

4.95 and 2.25

Step-by-step explanation:

x+y=7.2

x-y=2.7

Add equations

x+y + x-y= (2x-y+y)=2x

7.2+2.7=9.9

Therefore 2x=9.9 x=9.9/2=4.95

x=4.95

x+y=7.2

4.95+y=7.2

y=7.2-4.95=2.25

y=2.25

Answer Link
mhijlife mhijlife
  • 12-02-2022

Answer:

4.95 and 2.25.

Step-by-step explanation: This is really long... (PLEASE TAKE NOTE THE INFO ISNT DIRECTLY WRITTEN BY ME).


Adding equations (1) and (2), we get

Therefore

x=4.95


Substituting value of x from (3) in (1), we get


y=2.25


From (3) and (4), the two numbers are 4.95 and 2.25.

Answer Link

Otras preguntas

Charlie mixed 6 liters of juice with 2 liters of soda to make fruit punch. how many liters of fruit punch did Charlie make?
what is 1/2 multiplied by 3/5
I need help with this question :-/
Which of the following occurs at convergent plate boundaries? a. subduction zone b. island arc c. mountain formation d. all of the above
What do I have to do in this math problem
Which imperial power had the most colonies spread out across the world in 1900
On the integral of 1 to 9, what is sqrtx in respect to x?9∫√x dx1(Sorry not sure how else to write it..)
(a) A color printer prints 11 pages in 7 minutes. How many pages does it print per minute? (b) It takes 63 pounds of seed to completely plant an 8 -acre
Match the following Thanks
Explain the term contrapasso. To what does this term refer? What purposes does it serve within the text of inferno