Gemgirl8899 Gemgirl8899

03-11-2015
Mathematics

contestada

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

Respuesta :

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

write and solve an inequality that means a number plus four than or equal to twelve.

In the 1950s, women continued to be employed in industrial jobs similar to what they held during the second world war. True or false?.

A Bank manager receives Rs. 18000 for a basic 36 hours per week Over time is paid at a time and a half. How many hours are worked in a week where his total wage

A machine pumps 2.1 gallons of water every 1.6 minutes. How many gallons is pumped per minutes?

In Act IV of The Tempest, the masque implies that who should be the leader of the island? A. Stephano B. Ferdinand C. Prospero D. Caliban

find the surface area of composite figure. use 3.14 for π. round to the nearest tenth

Galactose is a ________. a) monosaccharide b) disaccharide c) trisaccharide d) polysaccharide e) phospho f) saccharide

According to Lindsey Smith of GE Healthcare, all of the following are necessary for a successful sales career EXCEPT: a. motivation. b. compensation. c. team or

What type of aging involves age-related changes that are due to environmental influences, poor health habits, or disease?

An immersion heater has a power rating of 1500 watts. it is used to heat water for coffee. how long (in minutes) should it take to bring 0. 7 l of water from ro