Gemgirl8899 Gemgirl8899
  • 03-11-2015
  • Mathematics
contestada

Change the subject of the formulae to b::: 8a + 3b = 12. And 3b^2=27

Respuesta :

TSO
TSO TSO
  • 03-11-2015
8a + 3b = 12
3b = 12 - 8a

[tex]b = \frac{12-8a}{3}[/tex]


And...

3b^2 = 27
b^2 = 9
[tex]b = \pm 3[/tex]
b = 3
b = -3
Answer Link

Otras preguntas

What is the principle called of the conservation of matter?
Compare and contrast a chemical reaction and a nuclear reaction.
forty percent of 25 students in the class are boys. write 40% as a reduced fraction. then find the ratio of girls to boys in the class.
why did Christopher Columbus use a telescope
Melinda paints 7/8 of a wall in 1 1/6 hours. What pat of a wall does Melinda paint in 1 MINUTE?
what are the equivalent fractions to 20/24
16/60 fraction in simplest form
Which achievement was Giovanni Caboto, also known as John Cabot, known for? A. He reached North America before Columbus but was unable to prove that he had foun
I'm really lost on this problem
The sum of three different numbers is 18. If every number is a prime number, what are the three numbers?