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

¿Cuál es un mes del otoño? Marzo Junio Mayo Octubre

i need help with these two questions

I need the answer ASAP

Given the formula below, solve for x. y - y1 = m(x-x1)

If you use someone’s else work word-for-word in your work:______.

6. Prepare a summary of the implications of capital structure theory that can be presented to Tom Moore. What insights can capital structure theory provide mana

John F. Kennedy believed that a leader should be _____. A. elected B. successful C. a lifelong student D. in the military

• The company reported net sales of $6,250 million. Assume that there were no noncash sales. • Operating costs (excluding depreciation and amortization) were 65

The government must mandate lower prices when beef surpluses exist; otherwise, the quantity supplied will continue to exceed the quantity demandedA. TrueB. Fals

A collection of computers that are connected in a small geographic area such as an office, college campus, or in your home is called a _____.