Answer: B
Step-by-step explanation:
Perimeter = 2(length+width)
'CD' = 20×cos(30) = 17.3205
width 'AD' = 20×cos(60) = 10
Perimeter = 2(17.3205+10)
= 2(27.3205)
= 54.641 =54.6
Answer:
15x + 20y
Step-by-step explanation:
First, we need to combine like terms,
10x + 20y + 5x
15x + 20y
Since x and y are different variables, we cannot combine them, meaning that the answer is,
15x + 20y
True
isosceles triangles
have 2 equal sides
Answer:
7.8
Step-by-step explanation:
the answer is
y = 7 + 3x
y = 3x + 7
y = mx + b, therefore the y-intercept is 7.
3y = 6x + 12
y = 2x + 4
y = mx + b, therefore the y-intercept is 4.
