22-10-2016
Mathematics

contestada

6y+5x=8 x3y=-7 use substituion

Respuesta :

22-10-2016

Substitution:

6y + 5x = 8
x + 3y = -7

x = -3y + 7

6y + 5(-3y + 7) = 8
6y - 15y + 35 = 8
-9y + 35 = 8
-9y = -27
-y = -3
y = 3

x = -7 + 9
x = 2

y = 3
x = 2

Answer Link

Otras preguntas

Hana makes beaded bracelets for sale. the materials for each bracelet cost $3.50 and she sells the bree let's for $7.25 each. To find her profits, she writes th

A ten-foot-long board is cut into three pieces. The second piece is half as long as the first. The third piece is 4 feet longer than the second. How long is th

Mao Zedong's charge to "learn revolution by making revolution" led to A. an attack on personal liberty B. an opening of the government C. economic prosperity D.

which of the following suggestion is most likely to help you maintain and renew your emotional energy

What are Aristotle’s three main means of persuasion?

there are at least 27 visitors to the nurses office each day at school. Which inequality represents the number of visitors to the nurses office?

which of the following is a false pairing of an early civilization and its modern-day location A. Mesopotamians - Iraq B. Indus Valley Civilization

What role did railroads play in the Industrial Revolution?

Which statement is true about the U.S. Constitution? It establishes a federal government with unlimited power. It explains the organization of state gove

Robert slices a large loaf of bread to make 12 sandwiches. He made 3 turkey sandwiches and 5 veggie sandwiches. The rest are ham. What faction of the sandwiches