I think it is the first one even though none of them make since to me
Answer:
10 degrees
Step-by-step explanation:
1.) every triangle has angles that add up to 180 degrees
2.) a right triangle has a right angle and two acute angles
3.) right=90 degrees; acute=<90 degrees
4.) 90+80=170
5.) 180-170=10
Answer:
189 cm²
Step-by-step explanation:
The area (A) of a rhombus is calculated as
A = 
× product of diagonals
= × 18 × 21 = 9 × 21 = 189 cm²
Answer:
There would only be one zero and it would be x = 9.
Step-by-step explanation:
Hope it helps!
Answer:
A
Step-by-step explanation:
Given
a = 
- 
= 
← as a single fraction
Thus
= 
= 
→ A
