5/8 of the students are boys
5 representing boys
8 representing all students
Answer:
The equation of the parabola is (x-2)^2 =8(y-2)
Step-by-step explanation:
Given focus is (2,4) and the directrix is y=0 so the parabola axis is parallel to y- axis.
Focus is (α,β+a) and the directrix is of the form y = β-a
so given focus is (2,4) compare (α,β+a)
here β+a = 4 and a=2 and β=2
now given directrix y = β-a = 2-2 = 0
now the general parabola is (x-α)^2 =4a(y-β) ...(1)
now substitute α =2 ,β=2 and a=2 above equation
The equation of the parabola is (x-2)^2 =8(y-2)
Answer:
13.) 257.08
14.) 33.57
Step-by-step explanation:
Assume you mean the perimeter.
The circumference is 2
r, then just add the extra measurements
Answer:
20
Step-by-step explanation:
substitute first to get:
6 + (3·4 - 5)2
multiply 3 and 4 to get 12:
6 + (12 - 5)2
subtract 12 and 5 to get 7:
6 + 7(2)
multiply 7 and 2 to get 14
6 + 14 = 20
