Answer:
14
Step-by-step explanation:
d=5 so
2(5)+4(5)-9-7
10+20-9-7
30-9-7
21-7
2×5+4×5-9-7.
10+20-9-7.
=14.
C: one triangle
well a triangle = 180°
45+45=90
90+90=180
D)45,90 90 this is the answer
