A set of average city temperatures in August are normally distributed with a mean of 21.25°Cand a standard deviation of 2° C.
What proportion of temperatures are between 19.63° C and 20.53° C?

d

step-by-step explanation:

the solution is in the picture

6 hours 48 min

step-by-step explanation:

68÷5=13.6

13.6×30=408min=6 hours 48 min.

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d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

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answer: -2+√x,-2-√x

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