OsamaAMS OsamaAMS

24-03-2018
Mathematics

contestada

9x+10y=29
10x+9y=28
Solve by elimination

Respuesta :

edyg144 edyg144

24-03-2018

[tex](9x + 10y = 29)9[/tex]
[tex](10x + 9y = 28) - 10[/tex]

[tex]81x + 90y = 261[/tex]
[tex] - 100x - 90y = - 280[/tex]
[tex] - 19x = - 19[/tex]
[tex]x = 1[/tex]
[tex]9(1) + 10y = 29[/tex]
[tex]9 - 9 + 10y = 29 - 9[/tex]10y=20
y=2

Answer Link

Otras preguntas

Which is a component of a phospholipid? carbon ring hydrophilic head long-chain alcohol amino acid

Which descriptions of the English colonies in North America are accurate? Choose all answers that are correct. a. Jamestown was established on good ground near

Miguel pays $3.78 for a bag of 14 oranges. find the unit price per orange

Why do solids have a fixed shape and fixed volumes ?

I NEED HELP QUICKLY PLEASE PLEASE PLEASE John wants to have $2 000 in 3 years. The current rate of return for a high interest savings account is 2.8%, compou

I need help with this question on my science packet and I don't understand it. A 70kg person travels to a planet where he weighs 1750 N. What is the value of g

Which term describes the energy per unit charge in a circuit? A. Resistance B. Current C. Voltage D. Power

HELP! PLEASE! I CAN'T FIND THE ANSWER! The product of two consecutive integers is 2 more than twice their sum. Find the first integer.

Which statement best compares the Union and Confederate armies at the beginning of the Civil War? A.The Confederate army was much larger than the Union army. B.

Why do solids have a fixed shape and fixed volumes ?