Answer:
13
Step-by-step explanation:
Diagonals of a rhombus are perpendicular bisector.
Hence, triangle ABE so formed would be a right triangle right angled at E.
Therefore, by Pythagoras theorem:

Somebody can estimate the length of a book by using a ruler and rounding it to the nearest whole number.
Answer:
-6/3
Step-by-step explanation:
Move down 6 from the top point.
Then move right 3 to the bottom point.
Answer:
find the base 1st then Height.You should be able to get your Area after doing those steps correctly
Answer:
38 + 37i
Step-by-step explanation:
(9 − 4i)(2 + 5i)
FOIL
first: 9*2 = 18
Outer: 9*5i = 45i
inner: -4i * 2 = -8i
last : -4i * 5i = -20i^2 = -20(-1) = 20
Combine together
18+45i-8i +20
38 + 37i