Answer:
<h2><u><em>
the circumference of a circle is defined as:</em></u></h2><h2><u><em>
</em></u></h2><h2><u><em>
c = pi*diameter</em></u></h2><h2><u><em>
</em></u></h2><h2><u><em>
if we have x segments of length y, then we can fit:</em></u></h2><h2><u><em>
</em></u></h2><h2><u><em>
c/y = z</em></u></h2><h2><u><em>
</em></u></h2><h2><u><em>
we can fit z segments of size y on the circumference c</em></u></h2><h2><u><em>
</em></u></h2>
<u><em></em></u>
Answer:
P=32m
A=48 m^2
Step-by-step explanation:
if two shorter sides are 4m each and the two longer sides are 12 m
4+4+12+12 to find the total P
Area, time the LENGTH by WIDTH to find the squared meters in the rectangle .
4x12 = AREA
Answer:
3.4
Step-by-step explanation:
Standard deviation of a population is defined as:
σ² = ∑(xᵢ − μ)² / n
The standard deviation of a sample is defined as:
s² = ∑(xᵢ − x)² / (n - 1)
It's not clear which one we have, so let's calculate both.
First, we must find the mean.
μ = (5+12+15+10+12+6+8+8) / 8
μ = 9.5
Now we find the squares of the differences:
(5-9.5)² + (12-9.5)² + (15-9.5)² + (10-9.5)² + (12-9.5)² + (6-9.5)² + (8-9.5)² + (8-9.5)²
= 80
Divide by n:
σ² = 80 / 8
σ² = 10
And take the square root:
σ = √10
σ ≈ 3.2
That's not one of the answers, so let's try the standard deviation of a sample instead of a population.
Instead of dividing by n, we'll divide by n-1:
s² = 80 / 7
And take the square root:
s = √(80/7)
s ≈ 3.4
So that must be it.
For a sum of a number t and 23
t plus 23
