mlopezmanny2763 mlopezmanny2763
  • 02-12-2021
  • Mathematics
contestada

If 12a 3b=1 and 7b–2a=9 what is the average of a and b.

Respuesta :

Baslel
Baslel Baslel
  • 05-12-2021

Answer:

b

Step-by-step explanation:

If 12a + 3b = 1 and 7b – 2a = 9, what is the average (arithmetic mean) of a and b ? Add 12a+3b= 1 and 7b-2a=9, then we will get 10a+10b=10 which results 10(a+b)=10. Thus a+b=1. Therefore, the answer is B

Answer Link

Otras preguntas

If 604-72=___,then 532+___=604.Explain the process of checking your work.
three consecutive even integers have a sum of 168. what's the value of the largest integer?
three consecutive even integers have a sum of 168. what's the value of the largest integer?
What is two thirds of 120?
Write an addition equation with a positive addend and a negative addend and a resulting sum of -8
what is 69/25 as a terminating decimal
What are the two largest ethnic groups in the united states today?
An experiment consists of rolling two fair number cubes. What is the probability that the sum of the two numbers will be 8? Express your answer as a fraction in
Which two countries were the first to declare war on Germany in WWII?
What is an equivalent fraction for 20/12