Answer with explanation:
Given:
In Δ DEF, ∠3=∠4.
To prove:→ DE=E F
Proof:
1. ∠3=∠4------[Given]
2. →∠1 and ∠ 3 are Supplementary to each other.
(a)⇒∠1 + ∠ 3=180°
→∠2 and ∠ 4 are also Supplementary to each other.
(b)⇒∠2 + ∠ 4=180°
--------------------[Exterior sides in opposite rays]
3. From 1 , a and b
⇒∠ 1 = ∠ 2-------[Two Angles Supplementary to equal Angles are equal to each other]
4. 
If two angles of a Triangle are equal , then side opposite to these angles are equal.
Answer:
The value of <em>n </em>is 15.
Step-by-step explanation:
The combined proportion is computed using the formula:
The information provided is as follows:
Compute the value of <em>n</em> as follows:
Thus, the value of <em>n </em>is 15.
Answer:
C
Step-by-step explanation:
you would start your graph at $20.
you would than create a graph that goes up hourly
with the money amount increasing every hour
Answer: A 17 more
Step-by-step explanation:
Answer:
A = 400 ft²
Step-by-step explanation:
The area (A) of a triangle is calculated as
A = 
bh ( b is the base and h the vertical height ) , then
A = × 20 × 40 = 10 × 40 = 400 ft²
