Answer:
a = 63˚
Step-by-step explanation:
1. Recognize that any triangle = ∑180˚
2. 180-81-b-a=0
3. 180-117=63˚
Answer:
<u>120</u>
Step-by-step explanation:
15 ⋅ 8 = 120
D. <span>Transitive Property of Equality</span>
Answer:
the answer is true.. I think
Really none of the above.
A principal square root of a real number is a positive real number (or a positive real number times i, if you're up to complex numbers, but let's assume not.) It's not necessarily a positive integer, √2 being the obvious example.
Is √2 a positive fraction? We can write it as √2 / 1 so I suppose it is. It's certainly not a rational number. Even if we grant irrationals as fractions surely √0=0 isn't a positive fraction. So "always" isn't correct.
I'd go with none of the above, but if I had to choose I'd choose D.
