Answer:
θ ≈ 17.1°
Step-by-step explanation:
Using the tangent ratio in the right triangle
tan θ = 
= 
= 
, then
θ = 
( ) ≈ 17.1° ( to the nearest tenth )
7 : 21
which can be simplified to 1 : 3 as both sides are divisible by 7
Answer:
40 + 4x
Step-by-step explanation:
formula for perimeter:
( length * 2 )+(width * 2)
you know that the length and width will be increased by the same number so you can call that X.
((length + x)*2) + ((width + x) * 2)
then substitute length and width
((15+x)*2) + ((5+x)*2))
you can simplify this a bit more
30 + 2x + 10 + 2x
40 +4x
Goodluck with your schoolwork/homework!
----------------------------------------------------------------
Sorry for any wrong answers or bad explanations.
I think u should go w/ choice A because u need to find the theoretical probability of Eric picking a black marble.......
Area = 1/2*a*P
(a = apothem , P= Perimeter)
P = Sum of all sides
= 12*8
= 96
Area = 1/2*30*96 = 1440
Hope this helps!
