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ipn [44]
2 years ago
15

Please help and show work if you can​

Mathematics
1 answer:
UkoKoshka [18]2 years ago
5 0

Answer:

38. <1 = 38^{o}, <2 = 32^{o}, <3 = 110^{o}

39. <1 = 71^{o}, <2 = 28^{o}, and <3 = 81^{o}

Step-by-step explanation:

38. Sum of angles in a triangle = 180^{o}

So that;

38 + 110 + <2 = 180^{o}

148 + <2 = 180^{o}

<2 = 180^{o} - 148

<2 = 32^{o}

Thus,

<1 = 38^{o} (alternate angle principle)

<3 = 110^{o}

Therefore;

<1 = 38^{o}, <2 = 32^{o}, <3 = 110^{o}

39. <2 = 28^{o} (alternate angle principle)

So that;

sum of angles in a triangle = 180^{o}

<1 + <2 + 81 = 180^{o}

<1 + 28^{o} + 81 = 180^{o}

<1 + 109 = 180^{o}

<1 = 180^{o} - 109

   = 71^{o}

<1 = 71^{o}

<3 = 81^{o}

<1 = 71^{o}, <2 = 28^{o}, and <3 = 81^{o}

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3 years ago
Find the circumference and the area of a circle with radius 3 m.
Effectus [21]

Answer:

\boxed {c= 18.84 \ m}

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Step-by-step explanation:

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<h3>1. Circumference </h3>

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c= \pi d

We know the radius of the circle is 3 meters, but we must find the radius. The radius is the line from the center to the circle's edge, while the diameter is the line through the center from edge to edge. Therefore, the diameter is twice the radius.

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Solve the exponent.

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6 0
3 years ago
PLEASE HELP ME!!!!
antiseptic1488 [7]

Answer:

OBC= 15

OCR =30

In OBQ

OBQ + QOB + OQB = 180

OBQ= OBC=15

OQB= 90

SO, QOB = 180- OBQ- OQB

= 180-15 -90

= 75

c) is correct

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