Answer:645 kilometers per hour
Solution.
Let v be the speed of the plane flying east!
Then, the speed of the plane flying west is v+75.
Since the planes are 5460 kilometers apart by 7 pm est,
(7-3)*(v+(v+75))=5460
2v+75=1365,
2v=1290,
v=645
answer: 645
Answer:
The difference between the area of the original triangle and the area of the new triangle is
.
Step-by-step explanation:
The equation for the area of a triangle (
) is:

Where:
- Base, dimensionless.
- Height, dimensionless.
The expression for each triangle are described below:
First Triangle (
,
)

Second Triangle (
,
)

The difference between the area of the original triangle and the area of the new triangle is:



The difference between the area of the original triangle and the area of the new triangle is
.
Answer:
-4
Step-by-step explanation:
This is known as "5 take 3", where ordering is not important.

2 lines parallel, and 2 triangles have a common angle
So the smaller Δ is similar to the bigger Δ (AA Similarity)
9:(4x-2)+9=12:(3x+2)+12
9:4x+7=12:3x+14
9(3x+14)=12(4x+7)
27x+126=48x+84
21x=42
x=2
So the answer is x=2