<h3>
Answer: 78 degrees</h3>
This is because alternate exterior angles are congruent when we have parallel lines like this.
Angle 2 and angle 8 are both outside the parallel lines, so that's what makes them exterior angles. Also, they are on alternating sides of the transversal line (angle 2 on the left, angle 8 on the right). So that's where the "alternating" comes from. The other pair of alternate exterior angles is angle 1 and angle 7.
We have formual for area of rectangle A=l*w where l is length and w is width. We can transform it to obtain width
A=l*w /:l (divide both sides by l)
![\frac{A}{l}=w](https://tex.z-dn.net/?f=%20%5Cfrac%7BA%7D%7Bl%7D%3Dw%20)
Knowing that A=189 and l=21 we can substitute our data to the formula
w=
![\frac{189}{21}= 9](https://tex.z-dn.net/?f=%20%5Cfrac%7B189%7D%7B21%7D%3D%209)
- its the result
The height is 14 cm.
A=bh/2
42=6h/2
42(2/6)=h
(42÷6)x2=h
7x2=h
h=14
Answer:
D
Step-by-step explanation:
The box plot explains the right numbers in order