We can Notice From the Figure that the Sides of the Triangle are Equal.
If a Triangle has all of its Sides Equal, then it is an Equilateral Triangle
We know that In an Equilateral Triangle all Angles are Equal to 60°
⇒ (2x - 4) = 60°
⇒ 2x = 60° + 4°
⇒ 2x = 64°
⇒ x = 32°
The 90th percentile is 1.2816 standard deviations from the mean. That tells you the standard deviation is ...
... (40 in - 38 in)/(1.2816) ≈ 1.56 in
The standard deviation for height for 4-year olds seems to be 1.56 inches.
Answer:
10 spaces in each direction
Step-by-step explanation:
5
!
-5--------------------!-------------------5
!
!
5
NO, nobody could be negative something years old. For example, nobody could be -2 years old. That just means they are not even born yet.
