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Nataliya [291]
3 years ago
11

Round this number to two significant figures. 72.8 1. 72 2. 73 3. 73.0 4. 74

Mathematics
1 answer:
marishachu [46]3 years ago
8 0
The answer is 73 because 8 is more than 5 so it rounds up to be 73
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Three exterior angles of a pentagon measures 60,80and 90.Find the measure of other two exterior angle, assuming them equally Tha
julsineya [31]

Given:

The three exterior angles of a pentagon measures 60,80 and 90.

To find:

The measure of other two exterior angle, assuming them equally.

Solution:

Let x be the measure of two other exterior angles of the pentagon.

We know that the sum of all exterior angles of a pentagon is 360 degrees.

60^\circ+80^\circ+90^\circ+x+x=360^\circ

230^\circ+2x=360^\circ

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Divide both sides by 2.

\dfrac{2x}{2}=\dfrac{130^\circ}{2}

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3 years ago
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3 years ago
I just need help with b and c
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Answer:

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Answer:

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3 years ago
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