ybnqweezzy ybnqweezzy

06-12-2020
Mathematics

contestada

Determine the solution to the system. Solve by Substitution.
3a + b = 30
b = 3a

Respuesta :

melissa5shen melissa5shen

06-12-2020

Answer: (a, b) = (5, 15)

Substituting b for 3a in 3a + b = 30, we have 3a + 3a = 6a = 30. So a = 30/6 = 5. Then, b = 3a = 3(5) = 15. So the solution is (5, 15).

i hope this helped! :D

Answer Link

Otras preguntas

Necesito que tu __ donde esta el hotel A) recuerdes B) recordes C) recuerdas D) recordas

i have a question about partial fraction expansion , ok so given 1/s(2s^2 +10) how would you set up the partial fraction? i wanna compare my answer to

How do scientists organize the time since Earth’s beginning? A. geographical time periods B. geological time periods C. prehistorical time periods D. historical

Okay I been on these 2 questions for about 30 min and I can't figure it out. 1:Jenna climbed a mountain and stood at the summit which was 4,000 feet above sea l

The question says; shown here is a mathematical step taken when solving an equation. Identify the mathematical reason or property used to simplify from the firs

You have read 100 pages of a 350 page book. You have 3 days left to finish the book. How many pages will you need to read to finish the book?

Help me please I have no clue

Sam deposits $18,000 each year into a retirement account with a 3.5% simple interest rate. If he deposits the same amount each year, how much money will he have

Does your skeleton show when electrocuted

How to get a loose tooth out fast and painlessly?

good job