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malfutka [58]
1 year ago
5

The formula m =1/2(a+b) gives the mean M of two numbers a and b

Mathematics
2 answers:
Semenov [28]1 year ago
7 0

Answer:

a = 2m - b , a = 15

Step-by-step explanation:

(a)

m = \frac{1}{2} (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

Viefleur [7K]1 year ago
6 0

Answer:

Step-by-step explanation:

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