Answer:
a) 90°
b) (d) The angle at the circumference in a semicircle is a right angle
Step-by-step explanation:
An inscribed angle has half the measure of the arc it subtends.
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Angle ABC is inscribed in a semicircle and subtends an arc of 180°, so has a measure of 180°/2 = 90°. Here, that observation is described by ...
The angle at the circumference in a semicircle is a right angle
Answer:
12 = -15
Step-by-step explanation:
Remember PEMDAS
Parenthesis
Exponents
Multiplication and Division (Left to Right)
Addition and Subtraction (Left to right)
4+ [8 = (8 - 7) + 6 - 12] - 10
4+ [8 = (8 - 7) + 6 - 12] - 10
4+ [8 = 1 + 6 - 12] - 10
4+ [8 = 1 + 6 - 12] - 10
4+ [8 = -5] - 10
4 + 8 = -5 - 10
4 + 8 = -15
12 = -15
Hope this helped!
Answer:
y=51, z and x= 129
Step-by-step explanation:
its complicated, but try to think of it as 51 and x/z are complementary angles, meaining they are on the same line, which means they equal 180, which makes this easier to solve meaning all you have to do is subtract 180-51=129.
This cannot be expressed as an answer but the expression for that is 3L-5
