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serious [3.7K]
3 years ago
12

Angle F has what measurement according to the protractor?

Mathematics
2 answers:
Ahat [919]3 years ago
8 0

Answer: The correction option is B, i.e., 140^{\circ}.

Explanation:

To find the angle F using protector first we have to study about the protractor.

In a protractor the angles are written in two scales. The angles of outer scale is increased in clockwise direction and the the angles of inner scale are increasing in anticlockwise direction.

The reason behind it is the property of supplementary angles. The sum of angles lie on straight line is always 180 degree.

When we have to find the angle we see the inner angles or inner semi circle or the angle in anticlockwise direction.

From the given figure it is noticed that the angles F lies on 40^{\circ} and 140^{\circ}.

The angle in anticlockwise direction is 140^{\circ}, therefore, the correct option is B.

NemiM [27]3 years ago
4 0
The answer is A. 140
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2 years ago
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Find all pairs of natural numbers which can be the solution to the equation a+b=42.
Setler [38]

Answer:

(1,41), (2,40), (3,39), (4,38), (5,37), (6,36), (7,35), (8,34), (9,33), (10,32), (11,31), (12,30), (13,29), (14,28), (15,27), (16,26), (17,25), (18,24), (19,23), (20,22), (21,21), (22,20), (23,19), (24,18), (25,17), (26,16), (27,15), (28,14), (29,13), (30,12), (31,11), (32,10), (33,9), (34,8), (35,7), (36,6), (37,5), (38,4), (39,3), (40,2), (41,1).

Step-by-step explanation:

To find all pairs of natural numbers which are solution to a+b=42, we need to first choose a value to one of them (let's choose 'a'), and that value will be the lowest possible, so we begin with a=1, and then we increase to 2, and 3, and so on.

For each value of a, we calculate the value of b using the equation.

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Then, with a=2, we have that b=40, and so on.

Doing this until a=41 (so b=1 will be the lowest value possible for b), we have the pairs of natural number we want:

(1,41), (2,40), (3,39), (4,38), (5,37), (6,36), (7,35), (8,34), (9,33), (10,32), (11,31), (12,30), (13,29), (14,28), (15,27), (16,26), (17,25), (18,24), (19,23), (20,22), (21,21), (22,20), (23,19), (24,18), (25,17), (26,16), (27,15), (28,14), (29,13), (30,12), (31,11), (32,10), (33,9), (34,8), (35,7), (36,6), (37,5), (38,4), (39,3), (40,2), (41,1).

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