Supplementary angles = Angles that add up to 180°.
∠5 + ∠7 = 180° ← supplementary angles
∠1 = ∠5
Since ∠5 + ∠6 = 180°
⇒ ∠1 and ∠6 will also be 180° . ← supplementary angles
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Answer: ∠5 + ∠7 (Answer D) and ∠1 + ∠6 (Answer A)
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Density = mass / volume
Density = 44,800 kg/ 5m^3
Density = 8,960 km/m^3
10x^3
since it only has 1 term, it is a monomial
and since the exponent is 3, it has a degree of 3
so it is a 3rd degree monomial

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Answer:
how to solve it is in the question above I hope it helps