Remember,

, where

is circumference and tex]d[/tex] is the diameter. They are related by a constant

(pi).
We can solve the above equation for d and then substitute our known values.

Number: n
square of number: n^2
sum of n and n^2 is n+n^2=20
Rewriting this equation, we get n^2+n-20=0 = (n+5)(n-4) = 0
Then n+5=0 and n-4=0, so n = -5 and n = 4.
You must check both results. It could happen that both are correct, or that only one is correct.
Answer:
D
Step-by-step explanation:
Ok well first off the bat, you know that obviously AC is equal to itself since the triangles share a side. That's Reflexive Property just saying. This is your first equal side.
AB is congruent to DC will form the term SSA in order.
AB is congruent to CD will form the term SSA in order.
AD is congruent to DC will form the term SSS or SSA in order.
AD is congruent to BC will form the term ASA in Order.
So AD is congruent to BC is the Answer!
Hope This Helped!
Answer:
4 sqrt(3) =x
Step-by-step explanation:
Since this is a right triangle, we can use trig functions
sin theta = opp / hyp
sin 60 = x / 8
8 sin 60 = x
8 ( sqrt(3)/2) = x
4 sqrt(3) =x
Real numbers
2.77 is not a natural number (counting numbers 1, 2, 3, ...)
2.77 is not a whole number (non-negative integers 0, 1, 2, 3, ...)
2,77 is not an element of null set as a null set has no elements.
{5, 7, 9}
The elements 5, 7 and 9 are elements of set D and they are also elements of set E.