2 years ago

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

Mathematics

2 answers:

Semenov [28]2 years 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]2 years ago

6 0

Answer:

Step-by-step explanation:

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