Triangle for the sides and the for the bottom of the shape, square
Answer:
A
Step-by-step explanation:
Using the pythagorean theorem, 
we plug the numbers in; 
9+36=c^2
45=c^2
sqr root of 45 is 
next find the positive perfect sqr root of 45 which will be 9.
9 goes into 45 5 times so it will be 
Sqr root of 9 is 3 so it will be 
Answer:
80 members
Step-by-step explanation:
Let the band members be= b and the chorale members= c
Then, according to question, b=c+30 and 
⇒
⇒
⇒
⇒
Now, substituting the value of b=c+30, we get
⇒
⇒
⇒
⇒
Therefore, 

Therefore, there are 80 members in the band.
EF and BC in the trapezoid below are parallel. if ED=35, BC=63, and DC=28
Find the length of BD if EF = 45. Not all figures are rendered to scale.
A trapezoid is a quadrilateral with one pair of opposite sides parallel. It can have right angles (a right trapezoid), and it can have congruent sides (isosceles), but those are not required.
The base angles and the diagonals of an isosceles trapezoid are equal. The intersection point of the diagonals is collinear to the midpoints of the two opposite sides. Opposite sides of an isosceles trapezoid are of the same length or congruent to each other.
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Answer:
if the sum of all the angles equal 180
Step-by-step explanation: