odelllinkin2002 odelllinkin2002

01-11-2017
Mathematics

contestada

3x+5y=2 and 9x+11y=14 equals

Respuesta :

choixongdong choixongdong

01-11-2017

3x+5y=2 (1)
9x+11y=14 (2)

multiply equation (1) by 3
9x + 15y = 6

so
9x + 15y = 6 (1')
9x + 11y =14 (2)
-------------------------subtract
4y = -8
y = -2

3x+5y =2
3x+5(-2) =2
3x - 10 = 2
3x = 12
x = 4

answer
(4, -2)

Answer Link

Otras preguntas

What was weakened by the outcome of the Vietnam War?

A nonfiction text told from a first-person point of view most likely includes

Which had the greatest impact on Franklin Roosevelt's victory in the 1932 presidential race?

At a deli 56 sandwiches were sold during lunchtime. Twenty five percent of the sandwiches sold were tuna salad sandwiches. How many of the sandwiches sold were

All of the following have been negative effects of globalization except what? A. Great damage to the environment B. Increased international terrorism C. Higher

Which is found in "On the Bus with Rosa Parks" but not in My Story? the idea that segregation was unfair details about what the police did a description of Rosa

The gross income of David Vaughn is $785 per week. His deductions are $42.25, FICA tax; $90.33, income tax; 2% state tax; 1% city tax; and 3% retirement fund. W

Norah observes some velvet-green growth on a tree trunk. When she picks up one of these plants, she notices that the plant has a flattened body and is attached

What symbiotic relationship do Venus flytrap's have?

Which contributed to Hitler's rise to power in Germany