The two triangles below are similar. What is the similarity ratio of ΔABC to ΔDEF?
2 answers:
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Answer: Option D
Step-by-step explanation:
In this question we use properties of parallelogram and angle sum property of a triangle.
In parallelogram ABCD
As, we know that opposite angles of parallelogram are equal
Therefore,
Now, in triangle ADC
We know that sum of all the angles of a triangle is
Subtracting 97 from both sides we get
Measure of
Let's assume
height of plane in feet =h
time in minutes =t
we are given
A plane is descending into the airport. After 5 minutes it is at a height of 6500 feet
so, we get one point as (5,6500)
After 7 minutes it is at a height of 5900 feet
so, we get another point as (7,5900)
we can use point slope form of line
points as
(5,6500)
x1=5, y1=6500
(7,5900)
x2=7 , y2=5900
Calculation of slope(m):
now, we can plug values
Equation of line:
we can use formula
we can plug values
Time of landing:
we can set h=0
and then we can solve for t
..............Answer