Answer:
EF = 68°
Step-by-step explanation:
If 2 chords of a circle are congruent then the corresponding arcs are congruent.
The central angle FDG is equal in measure to the arc that subtends it
arc FG = 68°
Given EF ≡ FG , then
arc EF ≡ arc FG, so
arc EF = 68°
Visually it’s red, however it is red. 1/4 + 1/2 = red, 1/6 + 1/2 is green.
Red = 3/4 = 75%
Green = 4/6 = 2/3 = 67%
Answer B) is the correct answer
Answer: σ: 2.76
Step-by-step explanation:
Count, N: 5
Sum, Σx: 125
Mean, μ: 25
Variance, σ2: 7.6
Steps
look at attached pic for formula
σ^2 = 
⇒ 
⇒ 7.6
σ = 
⇒ 2.756809750418
⇒ or 2.76
x = perimeter
x<156
length = 66
so, in order to calculate perimeter you need to add two lengths and two widths
so
156 (perimeter) - 2 (66) = two widths
156 - 132 = 24 (remember this number is two widths added together)
so 24 twice the width SO 12 would be the number that the width can't be larger than
the width has to be less than 12
w < 12
