Question

-. Two angles whose sum is 180° are called ------ angles.
2. If the abscissa of a point is x and the ordinate is y, then are called
the coordinates of the point.
3. A coin is tossed 1000 times with the following frequencies. Head: 455
Tail: 545. Compute the probability of each event.
. Write the formula for finding the probability of an event.
5. Write the coordinates of the origin.
5. A point both of whose co ordinates are negative lie in the quadrant.
7. Ordinates of all points on the x axis is -------
B. In figure if I parallel to m, then find the value of x.​

Answer 1

Answer:

1. Linear pair
2. True
3. probability =outcomes event /number of events

=head =455/1000

=91/200

tail=545/1000

=109/200.

Answer 2

1. Complementary angles

2. If the abscissa of a point is x and the ordinate is y, then (x, y) are called the coordinates of the point.

3. P(of getting head) = 455

1000

P(of getting tail) = 545

1000

4. the probability of an event = (Number of favourable outcomes

Total no. of outcomes

P(A) = n(E) / n(S)

5. (0,0)

6. 3rd quadrant

7. The ordinate of any point on X axis is 0