to make the proportion we make the ratio of the similar sides
For example
4/8 = 12/x
or we can write it as 4/12 = 8/x
or 12/x = 4/8
So last option is correct
Answer:
143
Step-by-step explanation:
Your equation to find x is:
140+146/2 = 143
Negative 73
drop of 73
minus 73
below 73
taking away 73
Answer:
131 cm
Step-by-step explanation:
formula for surface area of pyramid is
S = (1/3)Bh
but the base ia a square, so B = 
S = (1/3)
the pic shows h = 8
but we don't know x
do SohCahToa
sin60 = x/8
x = 8sin60
x = 6.92820323 or 7
plug in numbers
S = (1/3)
8
S = 392/3
S = 130.6666667 or 131 cm
I’m not 100% sure but I think it’s because 20/25 can still be simplified further, while the other 3 can’t.