A quadrilateral with exactly one pair of parallel sizes
B
Answer:
D
Step-by-step explanation:
1. Remind that
Here you can use trigonometric table to find the value of 
, or you can remind that 
and 
because special right triangle 45°-45°-90° is isosceles (with congruent oppposite and adjacent legs) and the ratio between the opposite leg and adjacent leg is equal to 1.
2. Now
because
Alexandera=a
imani=i
a is 8 more than i or
a=8+i
the sum of the 2 numbers is 50 or
a+i=50
a=8+i
so subsitute 8+i for a in a+i=50
8+i+i=50
8+2i=50
subtract 8 from both sides
2i=42
divide both sides by 2
i=21
subsiutte into a=8+i
a=8+21
a=29
a=29
i=21
Answer:
The perimeter is 41
Step-by-step explanation:
The perimeter of a shape is just the sum of all its sides added up. In this case, that would mean the perimeter is:
- 12 + 9 + 9 + 4.6 + 6.4 = P
- 30 + 11 = P
- 41 = P
Hope this helps!
