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

Which of the following statements is NOT true of all different types of matter?a.) They are made up of atoms and molecules. b.) The particles that make them up

Write a decimal that can be used for n to make the inequality below true 28.376>n

Determine which system below will produce infinitely many solutions. A) −6x + 3y = 18 4x − 3y = 6 B)2x + 4y = 24 6x + 12y = 36 C)3x − y = 14 −9x + 3y = −42 D) 5

answer. this please. i need help

Container A contains 10.0 g of liquid isopropyl alcohol which has a latent heat of vaporization of 732 J/g. Container B contains 10.0 g of liquid ethanol which

Jake is comparing the prices of two mattress cleaning companies. Company A charges $30 per mattress and an additional $13 as service charges. Company B charges

Which gas is found in the greatest abundance in the modern atmosphere? A. Nitrogen B. Hydrogen C. Oxygen D. Helium

Why does Laura nibble her heart-shaped cake from the bottom? A. She thinks the best part of the cake is on the bottom. B. She doesn’t want anyone to know

What sentence is the most grammatically correct? Although it had some ideas of democracy, these strictly only applied to white males. Although it had some ideas

Whats the answer to 80 miles in 2 hours unit rate?