Answer:
∠1 = 70°
Step-by-step explanation:
The three marked angles are vertical angles with the interior angles of a triangle. Vertical angles are congruent, hence the sum of the marked angles is 180°.
∠1 = 180° -60° -50° = 70°
This I my explanation for this question if it is helpful your welcome
Answer:
c
Step-by-step explanation:
I don't have anything to say but I double checked
Answer:
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Step-by-step explanation:
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I am joyous to assist you anytime.
Answer:
18
Step-by-step explanation:
18
10 tests = x tests
/ 5 weeks = / 9 weeks
10* 9= x5
90/5= 18