maestasnicoleaoy4vfj maestasnicoleaoy4vfj
  • 26-02-2019
  • Mathematics
contestada

Solve using the given method linear combination
3x + 2y = -4
4x - y = 13

Respuesta :

ucosta
ucosta ucosta
  • 26-02-2019

3x + 2y = -4      (I)

4x - y = 13        (II)

Multiplying both sides of (ii) by 2:

8x - 2y = 26     (iii)

Adding (i) to (iii):

3x + 2y + 8x - 2y = -4 + 26

11x = 22

x = 11

To find out the value of y:

4x - y = 13

y = 4x -13

y = 4.(11) - 13

y = 44 - 13

y = 31

Response: x=11 and y=31 .

:-)

Answer Link

Otras preguntas

Can anyone solve this numerical Answer is 2ohms
Convert into percentages 7/25
Which statement BEST describes a republic? A) The people elect representatives to make laws. B) The king or queen has absolute political power. Eliminate C) Rel
The main goal of science is to A. Learn how to use the laws of nature to benefit humans. B. Learn about the universe and the laws of nature. C. Replace old theo
Use morphology and syntax to make grammatical sense of the following sentence. The ova of all mammals except the monotremes undergo holoblastic segmentation. Is
Can anyone help me solve the problem please and thanks.
Meghan paid $7 dollars for a book. This price included a 20% discount. What was the original price of the book?
What is the third quartile of this data set 21,24,25,28,29,35,37,43,44
Pauline invested $10000 at two different rates,4% and6%.If his interest income was $470,how much did he invest in each rate?
What will happen to variable costs when the level of activity decreases?