OK, so;
BDE and BED are congruent because the opposite sides are both congruent
To find BDE and BED you must subtract 66 degrees from 180 degrees.
You are then left with 114 as the sum of both the angles you need to find
Since they are congruent, all you need to do is divide by two
114/2=57 degrees for both BDE (a) and BED(b)
Now for angle A and C;
This is easy because they are both congruent to the first two!
So basically, all of question four is "57 degrees"
Sadly for number 5 i did not understand the question :"(
For 6 tho;
AC is parallel to DE because angle C is congruent to angle BED
All the others can be ruled out
For 7;
BD is half the length of AE, so:
4x+20=2(3x+5)
4x+20=6x+10
20=2x+10
10=2x
x=5
This means BD is 20 bc
3(5)+5
15+5
20
And AE is 40 bc
20X2=40
or...
4(5)+20
Answer: $160
Step-by-step explanation:
80%is the same thing as 
Also , since we are using equivalent ratio , we will look for a way to write 200 in order to have equivalent of 100. That is 200 is the same as 100 x 2
Therefore : 80% of a 200 is the same
x 100 x 2
which is the same as 80 x 2
$160
Answer:
the tendency for the values of a random variable to cluster round its mean, mode, or median.
Let the segment be represented by AB where A(0,0) =
and B(3/4,9/10) =
.
The length of the segment drawn by architect can be calculated using distance formula:
AB =



Similarly, Let the actual end points of segment be AC where A(0,0) =
and C(30,36) =
.
The length of the original segment can be calculated using distance formula:
AC =


.
Thus, the actual length is 40 times the length of the segment drawn by the architect.
Thus, the proportion of the model is 1:40