Answer:
50
Step-by-step explanation:
(2+3=5) +5 = 10
6+7 = 13
8+9=17
10
Then add them all together:
10+13+17+10=50
Answer:

Step-by-step explanation:

Answer:
graph A
Step-by-step explanation:
if you use the substitution method is graph A
Answer:a²=b²+c² in a right angle triangle so answer is root 136
Step-by-step explanation:
Answer:
c.60°
Step-by-step explanation:
A triangle has 3 angles. Sum of angles in a triangle is 180 degrees. Three angles of an equilateral triangle are equal
So 180/3 = 60