P = 60 meters
l = 4 meters
60 / 4 = 20 <-- Because retangles have 4 sides.
If l=4 then subtract 4 from 20
So w=16
A)
since she washed 30 plates in 5 mins (7:30 to 7:35) the ratio was 5:30 or in simplest form 1min:6plates
This means she washes 6 plates a min and thus from 7:15 to 7:38 (23 mins) she washes:
6X23 = 138 plates
b)
L - plates left
T- total plates
t - time(mins)
"L = T - 6x"
This is because she washes 6 plates a min
Answer:
∠CDE = 14°
Step-by-step explanation:
Since CE is extended to point F then ∠FED is an external angle of the triangle
The external angle of a triangle is equal to the sum of the 2 opposite interior angles, that is
∠FED = ∠ECD + ∠CDE ← substitute values
4x + 5 = x + 8 + x + 9, that is
4x + 5 = 2x + 17 ( subtract 2x from both sides )
2x + 5 = 17 ( subtract 5 from both sides )
2x = 12 ( divide both sides by 2 )
x = 6
Hence
∠CDE = x + 8 = 6 + 8 = 14°
991 / 1000 . The decimal is in the thousandths place, so you put it over one thousand
