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

30% of the people at a concert are female. 1295 of the people at the concert are male. Work out the number of people at the concert who are female.
The population of rabbits on an island is growing exponentially. In the year 1990, the population of rabbits was 2100, and by 1993 the population had grown to 3
Solve these 2 equations 1. -3 (4x-10) 2. 3(2+q)-15
What is the temperature of the triple-point of water on an absolute scale whose unit interval size is equal to that of the fahrenheit scale?
WILL GIVE BRAINLIEST IF ANSWERED FAST!!!
if the atmospheric is 103.2 kpa and the absolute pressure at the bottom of the tank is 230 kpa. what is the specific gravity of olive oil?
if the median of 8 numbers is 4.5. GIVEN that seven of the numbers are 9,2,3 ,4,12,13,1.Find the eighth number
The sum of first 6 terms of an ap is 42. the ratio of its 11th term to its 33th term is 1: 3. calculate the first term of an ap. 9=2
Do the numbers 2.7,3.6,and 4.5 form a pythagorean triple?
I need help with my math homework