mbaerichibugo081 mbaerichibugo081
  • 24-07-2022
  • Mathematics
contestada

The formula m =1/2(a+b) gives the mean M of two numbers a and b
a.express a in terms of m and b
b.hence find a when m=19 and
b=23

Respuesta :

madiaanwar2 madiaanwar2
  • 24-07-2022

Answer:

Step-by-step explanation:

Answer Link
jimrgrant1 jimrgrant1
  • 24-07-2022

Answer:

a = 2m - b , a = 15

Step-by-step explanation:

(a)

m = [tex]\frac{1}{2}[/tex] (a + b) ← multiply both sides by 2 to clear the fraction

2m = a + b ( subtract b from both sides )

2m - b = a

(b)

when m = 19 and b = 23 , then

a = 2(19) - 23 = 38 - 23 = 15

Answer Link

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