Answer:
Hindu astronomer discovered 0 by using math. They use zero because they use it ion a number line with positive and negative numbers. They also use the 0 for counting the numbers.
Step-by-step explanation:
Exact Form:
13/4
Decimal Form:
3.25
Mixed number Form:
3 1/4
Answer: the z score is 1
Step-by-step explanation:
Since the head circumference for boys at birth is normally distributed,
we would apply the formula for normal distribution which is expressed as
z = (x - µ)/σ
Where
x = head circumference for boys at birth.
µ = mean head circumference
σ = standard deviation
From the information given,
µ = 34.5cm
σ = 1.3 cm
For a boy born with a head circumference of 35.8cm, the z score is
z = (35.8 - 34.5)/1.3
z = 1
No, because in the first one the 4 is negative, in the second it is positive