neurotic neurotic

25-11-2020
Mathematics

contestada

Solve the simultaneous equations:

3a-2b=14
12a+9b=39

Respuesta :

meowmeow223334 meowmeow223334

25-11-2020

Use elimination
Multiply first equation by 4
12a - 8b = 56
12a + 9b = 39
Subtract both
-17b = 17
b = -1
Plug in -1 for b
3a - 2(-1) = 14
3a = 12, a = 4
Final answer: a = 4, b = -1

Answer Link

Otras preguntas

Which term refers to an object that is critical to the characters in a film, but may be insignificant to the viewing audience? Prop Icon MacGuffin Noir

Independent states unified under a weak central government: a. unitary government b. confederate government c. federal government d. parliamentary government

A carbon-12 atom has a mass of 12.00000 amu. The mass of a proton is 1.00728 amu, and the mass of a neutron is 1.00866 amu. How many protons does the carbon-1

Solve the system of equations using the substitution method.

In what way was the American Revolution a civil war

How did people during the Zhou Dynasty perceive natural disasters such as floods or famine?

what is the main goal of the constitution as stated in the Preamble? A. To give the country uphold liberty B. To outline the particulars of freedom of speech. C

Alyssa observed a flock of small birds in her yard. The birds visited a pair of feeders that her parents put out for them and splashed in the birdbath. Which qu

Calculate the average power required to lift a 490-newton object a vertical distance of 2.0 meters in 10. seconds. [Show all work, including the equation and su

If x = 3, calculate the value of: 2x2 + x