mlopezmanny2763 mlopezmanny2763

02-12-2021
Mathematics

contestada

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

Respuesta :

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 you were giving a speech on illiteracy in the united states which of the following points would you discuss last

What is a panel of citizens who hear the prosecution’s case in secret hearings and decide whether the individual should be formally charged?

A punch recipe requires 3/5 of a cup of pineapple juice of every 2 1/2 cups of soda.what is the unit rate of soda to pineapple juice in the punch?

A 2kg object is moving horizontally with a speed of 4 m/s. how much force is required to keep the object moving at this speed and in this direction? explain.

5. How does the Pilgrimage to Cythera illustrate the Rococo style?

find the difference in simplest form. 2b/b^2-2b+1 - 2/b^2-2b+1

Why do differences exist in flood traditions of various nations or tribes?

The narrator of a story can be all of the following except the _____________________. a. author c. reader b. protagonist d. antagonist

(Kind of random) Can someone please help me decide what to paint?

Evaluate b2 c -1 for b = 8 and c = -4.