If hair grows at a rate of approximately 0.44 mm per day, how many
days has a hair been growing if it measures 40 mm from follicle to tip?

The hair would measure 40 mm in 90.9 days

If hair grows at a rate of approximately 0.44 mm per day, it means that hair increases at a rate of 0..44 mm per day.

This can be represented with this equation:

total hair growth = rate of growth of hair x number of days

hair growth = 0.44mm x n

40mm = 0.44 x n

divide both sides of the equation by n

n = 40 mm / 0.44

n = 90.9 days

In order to determine the number of days, divide the total hair length by the growth rate per day

A similar question was solved here: link

It would take 90.9 days

Step-by-step explanation:

The sample of the hair considered grows at 0.44mm per day, thus;

     0.44mm = 1 day

      40 mm = x days

So that, by appropriate deductions,

      0.44 × x = 40 × 1

     0.44x = 40

Divide both side by 0.44 to determine the value of x;

              x =

              x = 90.9090909091

Therfer, it would take up to 90.9 days for the hair to measure 40mm from its follicle to tip.

450 is the final answer! : )

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step-by-step explanation:

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