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
VER TODAS LAS RESPUESTAS ( 89+ )
Otras preguntas
Who was the president to get stuck in a bathtub?
Nutty Nuts is a monopolistic firm in the market for nuts. The following equations describe the demand for, and the cost of producing nuts, where Q is output in
An aluminum can weighing 10 g absorbs 106.8 J of heat and warms by 12oC. What is the specific heat of the aluminum can?
in 2010 a tree was 8 feet tall 2011 it was 14 feet tall write the equation how many feet the tree grew
F(x)=3x2 +12x +5 what is the discriminant
What is the number of sides of a regular polygon whose exterior and interior angles are in the ratio 1:5?
Your initial investment of $20,000 doubles after 10 years. If the bank compounds interest quarterly, what is your interest rate?
An animal shelter needs to find homes for 40 dogs and 60 cats. If 15% of the dogs are female, and 25% of the cats are female, what percent of the animals are fe
How does the structure of the text develop the author's ideas? The author mentions the Great Spirit several times to O emphasize that the Great Spirit was an im
If the Math Olympiad Club consists of 11 students, how many different teams of 3 students can be formed for competitions?
