heavrilbekayra
heavrilbekayra heavrilbekayra
  • 04-05-2016
  • Mathematics
contestada

Solve the system by the elimination method. Check your work. 3a + 5b - 7 = 0 a - 2b - 4 = 0

Respuesta :

meerkat18
meerkat18 meerkat18
  • 11-05-2016
3a + 5b - 7 = 0
0a - 2b - 4 = 0

-2b = 4 - 0a
b = (4 - 0a)/ -2
b = -2

3a + 5b - 7 = 0
3a + 5(-2) - 7 = 0
3a - 10 - 7 = 0
3a - 17 = 0
3a = 17
a = 17/3 or 5 2/3

Answer Link

Otras preguntas

What is the central theme of the story the cask of Amontillado
factorize r³+r²+r-14​
The height of a triangle is 4 ft less than the base x. The area is 126 ft2. Find the dimensions of the triangle.
A lab group measured the thickness of 500 sheets of copy paper to be 5.15 cm. Based on this measurement the thickness of one sheet of paper should be recorded a
Compared with authoritarian parents, authoritative parents are likely to be less educated. more responsive. less trusting. more conservative.
in a volcano, erupting lava flows continuously through a tube system about 12 kilometers to the sea. Assume a lava flow speed of 0.5 kilometers per hour and cal
A company operates on two types of servers: 2 large servers (L) and 4 smaller servers (S), with a combined total of 64GB RAM. The other day a large server and a
the area A of a square is the length of side L sqaured
Assume that an average cell has a diameter of 6 micrometers (6x10^6 meter), which means it has a volume of 100 cubic n 10^10 cells per cm. Estimate the number o
Help a homie out plz