Answer:
8 7/10 - 3 4/10 = 5.3, 5 3/10, or 53/10
5.3, 5 3/10, and 53/10 all equals to 8 7/10 - 3 4/10 :)
Step-by-step explanation:
Answer:
AC = 20
Step-by-step explanation:
Δ BDE and Δ BAC are similar, so the ratios of corresponding sides are equal, that is
= 
, substitute values
= 
( cross- multiply )
4AC = 80 ( divide both sides by 4 )
AC = 20
(x + y)² and z² + 4(1/2 xy) both represent the area of the outer square and are equal.
Step-by-step explanation:
- Step 1: The below reasons explain why the expression is a true equation.
1. The expression (x + y)² finds the area of the outer square by squaring its side length.
[In the figure, side length of the outer square = x + y and area of a square = (side length)²]
2. The expression z² + 4(1/2 xy) finds the area of the outer square by adding the area of the inner square and the four triangles.
[In the figure the length of the inner square is z, the triangles have a base x and height y and area of a triangle = 1/2 base × height]
⇒ So the left hand side and right hand side of the expression is equal.
Answer:
20
Step-by-step explanation:
(1÷3)×(3÷4)×(80)=20
