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

Solve the inequality: x + 5 < 7 x < 3 , x > -2. , x > 12. , x < 2

Read the paragraph and decide if the following is true or false Raul has many hobbies Yo tengo muchos pasatiempos. En el verano practico deportes y otras activi

Which of the following represents a single replacement reaction? Select one: a. AB + C --> AC + B b. A + B --> AB c. AB + CD --> AC + BD d. A - B -->

Add. 5/6 + 2 3/4 Enter the sum in the box as a mixed number in the simplest form.

Solve for x. 4 (x + 1 1/3) = 9 2/3 Enter your answer as a mixed number in simplest form in the box.

9. Which substance is cut by restriction enzymes? A. DNA B. proteins C. amino acids D. chromosomes

If each unit represents 3.2 miles, what us the distance from school to the football field?

Help solve this please?

Select the statements which could describe the graph of a nonproportional relationship.

Which change occurred in North Carolina's economy after the Civil War? O Wheat became the main cash crop on the Coastal Plain. O The furniture industry grew in